Showing posts with label evolution. Show all posts
Showing posts with label evolution. Show all posts

Monday, January 30, 2017

A Whirligig Tour of the Beautiful Basics of Science

The Canon: A whirligig Tour of the Beautiful Basics of Science
© 2007 Natalie Angier
293 pages



Science is amazing! Why is so much of the writing about it so lame?   Natalie Angier's The Canon first reviews the principles of scientific thinking before talking - nay, gushing -- about the basics of physics, chemistry, cosmology, biology,  astronomy, and geology.   But this isn't just a science primer like Almost Everyone's Guide to Science, or Theories for Everything. It is written with a conscious desire to seem fun, so the author is borderline bubbly and generous with cultural references and wordplay.  It's sometimes distracting, but I enjoyed it on the whole.  The personable approach to science also manifests itself in the way Angier works in little stories about her life that relate (like being thunderstruck by an earthquake in her normally placid residence in  D.C.), or interviews with scientists in the field, whose own love and continuing wonder for their subject is part of the delivery.   This is definitely a layman's approach to science -- there's no graphs, equations, or tables to be found, no terrifying mathematics -- but what made a winner for me, from the get-go, were the opening chapters on thinking scientifically. Angier sells the scientific method to readers by connecting it to what they already do: for instance,  the act of troubleshooting a technical problem is similar, as we attempt to narrow down problems by focusing on one variable at a time. A reader who reads Brian Greene with ease may find Angier's lively -- manic, even --  romp through the lab to be silly, but I found her enthusiasm welcome and the wordplay diverting.  A sample from her chapter on geology:


The planet we inhabit, the bedrock base on which we build our lives, is in a profound sense alive as well, animate form from end to end and core to skin. Earth, as I said earlier, is often called the Goldilocks planet, where conditions are just right for life and it is neither too hot nor too cold, where atoms are free to form molecules and water droplets to pool into seas. There is something about Goldilocks, beyond her exacting tastes, that makes her a noteworthy character, a fitting focus for our attentions. The girl cannot sit still. She's restless and impulsive and surprisingly rude. She wanders off into woods without saying where she's headed or when she'll be home. She barges through doors uninvited, helps herself to everybody else's food, and breaks the furniture. But don't blame her. She can't help herself. Goldilocks is so raw and brilliant that she has to let off steam. Like Goldilocks the protagonist, Goldilocks the planet is a born dynamo, and without her constant twitching, humming, and seat bouncing, her intrinsic animation, Earth would not have any oceans, or skies, or buffers against the sun's full electromagnetic fury; and we animate beings, we DNA bearers, would never have picked  ourselves up off the floor.   The transaction was not one-sided, though. The restless, heave-hoing motions of the planet helped give rise to life, and restless life, in turn, reshaped Earth." 






Tuesday, July 12, 2016

TBR: And Then There was One

Dear readers,  we approach the end for the To be Read Takedown Challenge!



Richard Francis' Domesticated: Evolution in a Man-Made World proved disappointing, not because of the quality of content but the focus thereof.  Although Domesticated sells itself as a work on animal domestication, and does provide natural histories of various animals like pets, horses, camels, pigs, and rodents, a section on human evolution consumes a fourth of the book, and there's not a non-mammal species to  be found.  Why devote sections to guinea pigs and creatures that aren't actually domesticated (raccoons) and ignore the 2nd most common foodsource on the planet, the chicken?  The answer lies in Francis seeing humanity as domesticated, too, albeit self-domesticated, and he uses the examples of species like the raccoon to argue that we selected 'tame' traits in ourselves, like prosociality.  He mixes the science with entertaining personal accounts, like his misfortunes attempting to ride a camel, and similarly clumsy but appreciated attempts to mix in some cultural history.

If you've been playing at home, you'll know the official TBR list is now down to one item: Trucking Country: the Road to America's Wal-Mart Economy. There's a bonus round of sorts consisting of the books I didn't add to the list at the start, in part to preserve some mystery and in part so it wouldn't look so daunting.  The bonus round has a mix of law, history, religion, and tech.  The only heavyweight is Trucking Country.  There are some reviews pending.


Taken down!

Liberty, Defined, Ron Paul
Big Box Swindle, Stacy Mitchell
Saving Congress from Itself, James Buckley
Cyber War: The Next Threat to National Security, Richard Clarke
When Asia Was the World, Stewart  Gordon
Tubes: A Journey to the Center of the Internet,  Andrew Blum
The Orthodox Church, Kallistos (Timothy) Ware
Green, Blue, and Grey: The Irish in the American Civil War, Cal McCarthy
Don't Hurt People and Don't Take Their Stuff, Matt Kibbe
The Great Debate: Edmund Burke, Thomas Paine and the Birth of Right and Left, Yural Levin.
Freedom and Virtue, ed. George Carey
 The Obstacle is the Way, Ryan Holiday.
Literary Converts, Joseph Pearce
Domesticated: Evolution in a Man-Made World,  Richard Francis
10% Human, Alanna Collen.



Coming Attractions
Trucking Country: The Road to America's Wal-Mart Economy, Shane Hamilton.

Wednesday, March 16, 2016

Spring Cleaning

The wind is blowing, the trees are in leaf, and I sense spring is on the way. Well, good! Not that this winter has been particularly bad, but spring has far better scenery.  I spent this past weekend cleaning while listening to an audio version of The Importance of Being Earnest, and then took in a local play at the Alabama Shakespeare Festival. The play was "White Lightning", and celebrated the moonshine-running origins of stockcar racing. The closest I've come to watching NASCAR is watching Cars, but I enjoyed the play enormously, featuring as it did one of my favorite ASF actors, Rodney Clark.


There's actually a book on this subject called Driving with the Devil that -- so help me -- I might actually go for. Not that I'm suddenly all afire about racing, but who can't appreciate a history of rescuing ardent spirits from the law?



Continuing and completing the spree of science books lately was E.O. Wilson's  The Social Conquest of Earth.  The book examines 'eusociality' as practiced by both humans and insects.  Eusociality involves a trascendent social order that is sustained by passing generations, with a high degree of specialization.   Wilson is one of the grand old men of biology, the effective founder of the sociobiological discipline. After dealing with the whole of natural human history in chapter one, Wilson uses his extensive insect experience to explain what eusociality is and how it might have evolved. He then speculates on what biological basis culture, art, etc. might be derived from.  I found parts of the book, like the extended debate between inclusive fitness and kin selection as evolutionary drivers, a touch esoteric, and probably would have enjoyed the book more if I'd hadn't gone into it expecting to read more than about humans and termites.

Shortly before that, I read Unnatural Selection, comments for which are forthcoming. This week I'm finishing up a social history of the Scotch-Irish, called....The Scotch-Irish: A Social History.    It was part of an intended nod toward St. Patrick's day, though there's no way in blazes I'm finishing The Year of the French in time for tomorrow.


Thursday, February 11, 2016

Genome

 Genome: The Autobiography of a Species in 23 Chapters
© 1999 Matt Ridley
317 pages



  The human genome is a recipe book, divided into 23 chapters, but considerably larger than Matt Ridley’s Genome. Were it to scale, he writes, a genuine version of the genome in book form would be closer to the size of a stack of bibles.  Genome visits each of the human cell’s 23 chromosomes in turn to learn a little something about human nature. This is not An Ancestor’s Tale in miniature, as Ridley addresses the entire natural history of human kind in the first chapter.   Subsequent chapters cover subjects as diverse as the genetic basis for language and sex differentiation, and as ambitious as free will.  Health and disease occupy much of Ridley’s attention; after genetic disease is covered by itself,  these diseases  are used to illustrate other subjects.    One oft-used example is that of the prevalence of sickle-cell anemia among people of immediate African ancestry;   carrying one allele for it greatly reduces exposure to malaria, a scourge of the continent.  For the genes, losing a few carriers to sickle-cell anemia is a better bargain than losing a greater number to malaria. In evolution, as in economics, there are no solutions – only trade-offs.  Nothing is simple; many conditions like asthma are caused not by one gene flubbing, but by different genes in different populations. Genetics is a subject that can quickly get too detailed for lay readers to enjoy, but Ridley finds the right balance between narrative and specifics, and he has an sly wit.  In a chapter on the sinister history of eugenics, he notes that the Soviet Union never adopted a eugenics program; they were more interested in murdering clever people than limited ones.  The take-home lesson is the human body is not one thing with a becraniumed control tower;   even our flesh is dynamic,  our genes warring with one another and vying for control between themselves and the brain they forged and maintain.   Though it may lose something in being slightly dated, Genome is an eye-opening bit of popular science that offers plenty of insight into history, as well. There was a reprint in 2006 that may have more current information.

Related:

Thursday, January 21, 2016

Demonic Males

Demonic Males: Apes and the Origins of Human Violence
© 1996 Dale Peterson and Richard Wrangham
350 pages



Why is the world run by violent men?  Demonic Males  argues that human males are by violent by nature,  a trait we share with other primates, and that this aggressive behavior is sustained through sexual selection.   Males are not uniquely violent, nor is our inherited penchant for bloodshed  inescapable,  but we can only begin to look for remedies by understanding the scope of the problem.  To combat violence is to war against human nature itself.

Contrary to popular opinion, human beings are not the only creatures who wage war against ourselves. Demonic Males opens an account of a band of chimpanzees moving through the forest as though on a hunt, only to choose at their target an isolated member of a neighboring band of chimps.  After a gruesome ambush  that left the target dead, the war-band then retreated into its own territory – its sole accomplishment having been the deliberate murder of a neighbor.   The authors follow up with many other such field reports, from Africa to Asia, spanning the primates, and find casual and ‘political’ violence in each class of the great apes, and from this argue that the domination of the planet by aggressive men owes not to a vast culture of patriarchy, but to the desperate straits our ancestors came of age in.

Small orangutans chase down unwilling females and force them to copulate,  chimpanzees brutally attack one another when vying for power, and even the mostly-peaceful gorillas practice infanticide.  In every primate species, it’s the men doing all of this fighting – and fighting with tooth and claw.  Do humans seem like improbable creatures of war? We have no tusks, no claws, no powerful tails.  Our methods of carnage are simply different:  human males specialize in fisticuffs, common to long-limbed apes.   The authors’ research indicates that the difference between highly aggressive species like humans and chimpanzees, and the more peaceable groups, lay in the social dynamics of food sourcing. the gorillas and bonobos observed  had ranges that allowed for large, stable troops, while the chimpanzees had to roam for food in much smaller bands fighting for survival. The woodland fringe where humans first appeared would have relegated us to that raiding behavior as well. The authors draw parallels between chimpanzee warfare and the small band raiding observed historically across the world, and lingering today in the depths of South America and the streets of Los Angeles.

Though violent behavior is regarded as self-defeating in the modern world, at the primeval level it serves certain purposes.   The story begins with food, but eventually circles back to sexual selection. The small variant of orangutan males could never challenge large males for mating opportunities, so they seize them. A silverback gorilla  has the responsibility for protecting every female and their young in his troop;  like a lion, he has little interest in safeguarding some other gorilla's progeny. For chimpanzees, beating their fellows into submission is just as effective as bribing them with food.   Females are involved in the continuation of aggression, too, sometimes against their will (in the case of rape) and sometimes complicitly, as when they throng a rising star, eager for his protection against the other aggressors.

Though the argument of Demonic Males is that humans are fundamentally aggressive,  the authors demonstrate that there are alternatives.  Chimpanzees, for instance, have cousins across the river who are very different:  isolated from competition and with an abundance of food, aggression has withered, and large alliances of females rein in throwbacks.    While human nature has a violence cast now, in the future, the sustained institutional suppression of violence might allow us to grow away from ours as well.  

Demonic Males covers a lot of territory --  dismantling the myth of the noble savage, weighing anthropologists and primatologists' field reports against one another -- and presents a serious challenge to those who those who believe that man can simply be 'retrained' in the matter of the New Soviet Man.  Frans de Waal's own extensive experience observing chimpanzees is not nearly as pessmetic; in Chimpanzee Politics, for instance, he argued that despite surges of violence against political rivals in high-stakes situations, most of the time the daunting strength of males is not unleashed, the contenders pulling their punches.  The gorillas' practice of infanticide, so similar to that of lions,  indicates it is not a recent, primate-specific tactic.  The authors did draw on a much broader range of activity,  however, so this certainly merits consideration.


Related:
Chimpanzee Politics, Frans de Waal

Monday, July 28, 2014

This week: war, war, war

This past week has been a quiet one, as I've been devotedly reading through Castles of Steel, an 800+ page history of the naval war between Britain and Germany during World War I.  I'm just starting Jutland, and after that it's essentially a staring contest, so the end is in sight. After that I'll revisit the American Revolution, since The Men Who Lost America is finally here. Sure, it's late for my July Fourth readings, but to us real Americans, every day is Independence Day.

I jest, of course.  Between the two for leisure I'll enjoy the second volume of The Eugenics War series by Greg Cox.  Khan has just attempted to unite his genetically engineered brethren, only to realize it's like herding saber-toothed cats.  Never invite one superman who is a Marxist revolutionary and another superman who is the leader of an American patriot militia fighting the government to dinner. It's awkward and neither of them appreciates good scotch.


I haven't yet commented on nor reviewed Antifragile nor Good-Natured, so before they get pushed so far on the back burner that they fall off into "Well, I'll re-read  and review them properly later" territory (terra incognita, where there be dragons and from whence few books emerge), lo! Comments.
 Antifragile, which like The Death and Life of Great American Cities shaped my thinking long before I finished it,  examines how certain systems can benefit from stress and unpredictability rather than be undone by them, or even merely survive them.  A quotation I shared the first time I started reading the book demonstrates how there is no field of human experience that its author does not wade in and throttle.  It's a powerful work, a pot of gold mixed with scorpions  -- no reader can stick his hand in without being stung by Taleb's bellicose energy, but the man practices what he preaches. Many of his examples are drawn from the world of business, and some chapters are technical enough that even he tells readers they can leave them alone --but I figured that was a challenge on his part.  His essential point is that surviving lots of little crises is better than preventing them and then being wiped out by a major crisis. Organic systems can be strengthened by stress in the right amount; this is as true of bodybuilders (Taleb's own bulk comes from a routine that consists of him attempting to out-lift himself once a week in a quick sessions, instead of engaging in repetitions) as of economies.  Too big to fail? That's fragile, and a national economy based on them is inviting death.



Two months ago I read Good Natured, which as I feared blended in with the rest of de Waal's books. I've read them too closely together, I think.  The author uses years of observations at an expansive Dutch primate center alongside extended field reports from primatologists like Jane Goodall to examine the biological basis of moral behavior. Much of the book is taken up with de Waal presenting chimpanzees, bonobos, and monkeys of acting with respect to moral norms, and  the basis for these behaviors is that socially-healthy behaviors like morality are more evolutionary beneficial. He also addresses the delicate balance between individual actions and communal advancement, which occurs twice here -- both in behavior and in genes, as mutations always occur in individuals, but they're passed on within populations. Individuals do not evolve, groups so.  It's fascinating, and eye-opening, but I've read so much of de Waal it's like working in a cathedral or a park. The majesty becomes ordinary after too much regular exposure.

Well, off I go to big ships, baffled royals, and a book read in Ricardo Montalban's voice.




Saturday, January 11, 2014

The Red Queen

The Red Queen: Sex and the Evolution of Human Nature
© 1993 Matthew Ridley
404 pages


The Red Queen begins with a question: why do creatures have sex? Why did it evolve? The answer, Matt Ridley believes, lies in the principle of the Red Queen. A character featured in Lewis Carroll's  Through the Looking Glass, she announced to Alice that in her world, it took all the running one could do simply to remain in one place. This characterizes the constant struggle for domination between species in the natural world,  a struggle between creatures not only visible to us, but between parasites within our bodies  and our immune systems.  Every move is countered, every success overturned; such is the impetus for evolution. In The Red Queen, Ridley explains his reasoning, and demonstrates how  evolutionary principles subtly drive the expression of human sexuality.

There's a lot of tension in this work, first when Ridley makes his case and somehow incorporates aspects of evolution from disparate camps (gene-centered, individually-driven, species-based) , and in the heart of the book as he examines the implications. This is especially true in the chapters, "Polygamy and the Nature of Men" and "Monogamy and the Nature of Women":  while it is true men have a genetic inclination to sow seeds and women one to invest in a partner,  behavior as studied indicates that things are not to trite. In the last chapters of the book, Ridley looks at sexuality as a possible cause of advanced human intelligence (competition and tension between the sexes and individuals), which is amusing given the power sexual interest has to render victims dumbstruck and seemingly foolish.

Since its publication, The Red Queen has proven influential; I knew of it long before I read it because of its place in the literature, being cited often. That may attest to the science, which is is speculative but sensible based on what he presents. He certainly makes for an entertaining author,  one whose arguments are open to virtually anyone regardless of scientific reading;  he begins with a technical, biological edge before spending most of the book on behavior -- a softer, fuzzier realm for readers.




Monday, November 11, 2013

This week at the library: NaNoWriMo, rebels against the rebellion, death on Everest, and maaaaybe Richard Sharpe

Dear readers:

For the first time in the five or so years I've been aware of NaNoWriMo, or National Novel Writing Month, I am attempting to participate. For those who have not heard of this, it's a challenge in which participants commit to write, in the month of November, a 50,000 word novel. This amounts to writing ~1700 words a day,  which is more difficult than it sounds considering not only the tendency of life to pop up and claim time meant for writing, but the fact that you have to have something to write about.  I'm participating not because I have a coherent novel to write, but because  I like the idea of forcing myself to sit down every night and work on on growing one thing. I've missed two days, but am off this Saturday and intend on catching up...providing I think can of something to write. At present I have decided to have my main character chased into the woods by dogs. I assume I can get a few thousand words out of him trying to get back to civilization.

Over the last week or so I've finished a handful of books, both fiction and non-. I resumed Wendell Berry's "Port William" series with Nathan Coulter, which was the first book I've read by Berry that didn't bowl me over. It's the first book in the series, and is principally about the relationship between three generations of Coulter men after Nathan's mother dies. Nathan is a short novel, and lacking completely the commentary characters add in Jayber Crow and Hannah Coulter on the changes they see in town. It helps that very little time passes in Nathan Coulter, for the title character is still a boy at its end.

Another book I've finished with is The Last Human, a "guide to 22 species of extinct humans".  This work is essentially a catalog of fossils, with a few brief documentary 'stories' about the man-apes included, and supplemented with lots of fetching photos. Each chapter details the fossils for a given species (which can be very scant; sometimes amounting to nothing more than bits and pieces of a skull), technical descriptions of the remains (describing, for instance, the thickness of brow ridges or the orientation of a given orifice), and speculations on their behavior and diet given their bones as we have them, and the environment of the time. It's more suitable as a reference, a snapshot of how little we know presently, than as a popular introduction to the natural history of humans.

I also finished two works which will get comments: CS Lewis' Screwtape Letters, which I was taken by, and Train Time, a bit of business projection.

In the next week, I intend for my reading to remain light: I have a book on interlibrary loan, The South vs. The South, and have checked out Sharpe's Revenge. However, earlier today someone posted a link to a story detailing -- of all things -- the number of bodies laying about Mount Everest of would-be climbers who succumbed to the elements, and who are not retrievable because of the ravages of the environment. Because of the extreme cold, there are people up there who've been deceased for nearly a century. Anyhoo, after that I spent several hours reading about Mount Everest expeditions and learned that not only is it very dangerous and wretchedly painful, but costs $25,000 for permission from the Nepalese government to try. I may be reading Into Thin Air by Jon Krakauer, who participated in an infamously lethal expedition back in 1996.   If I had that much money to spend on one recreational trip, I would not use it to climb a mountain that killed one in four people . I'd learn to fly and rent a P-51, I think...

Happy reading -- and happy writing, to my fellow nanowrimo participants.




Wednesday, September 4, 2013

Paleofantasy

Paleofantasy: What Evolution Really Says about Sex, Diet, and How We Live
© 2013 Marlene Zuk
328 pages


Despite its name, Paleofantasy is not a deliberate debunking of arguments for a 'paleo diet' and a paleo lifestyle.  Although Zuk does take aim at paleo proponents time and again, her argument approaches the same ideas from a different tack. Rather than assume that people ought to live the lifestyle our bodies evolved to expect, and then look for the science that informs that lifestyle, Zuk first asks:  what does biology tell us about the way our ancestors once lived, and can that information be used to help us today?  Subsequent chapters are a brief survey of the evolutionary heritage of our diet, our sex and childrearing practices, modes of exercise, and health.  The essential point of Paleofantasy is that evolution is an ongoing process: humanity is not a finished product, nor a monolithic species. What is true for some populations doesn't necessarily hold for others.  Thus, studying the lifestyle of our ancestors isn't particularly helpful, because they had different lifestyles depending on their local climate, and each made micro-adaptions in its own way.  Two populations of mountain-living people ,in Tibet and the Andres, both adapted to living in such thin air -- but in two different evolutionary ways. Her message to those interested in paleo living is this: don't get carried away.  By all means, don't overeat and get in a lot of exercise -- but do it because it makes sense now, not because the ancestors starved and were active.

Although the book will probably succeed in cooling the jets of the moderately interested, for more ardent practitioners, she will doubtless fall short, and not just because of defensiveness on readers' part. A staple of paleo nutrition is that grains are of the agricultural devil. Zuk's is response is to point out that look, we've evolved a gene that lets us process starch.  We've adapted! Evolution in action.  She does not, however, address the concern of anti-grain readers that while we can eat grain, we shouldn't because of its insulin-spiking effects and the subsequent relationship with diabetes and obesity.  To borrow an example from her book, also used in Sean Carroll's The Making of the Fittest: while there are snakes who can survive eating poisonous toads,  that doesn't mean they should turn poisonous toads into the bedrock of their snake food-pyramid. Likewise, she doesn't address the rationale that palo-fitness people use in pushing for short, intense workouts, namely that a high level of stress for a short time is better at building bone and muscle than a marginal level of stress done for long intervals.  She simply says "Hey, there are people who have adapted to running really long times."

Paleofantasy doesn't necessarily impress, but it does offer a moderating voice to those who can get carried away by the prospect of living like our ancestors to the point of going to bed with a Sounds of the Nighttime Forest CD playing, because that's what our brains expect.

Related:
Antifragile, Nassim Nicholas Taleb (which includes a section on high-stress short-term exercise)
Wheat Belly, William Davis;  Good Calories Bad Calories, Gary Taubes (on the problems of the modern diet)
Catching Fire: How Cooking Made us Human, Richard Wrangham
Sex on Six Legs, Marlene Zuk.

Sunday, August 25, 2013

The Righteous Mind

The Righteous Mind: Why Good People are Divided by Politics and Religion
© 2013 Jonathan Haidt
528 pages



The Righteous Mind begins with a question, seriously posed: why  can't we all get along? To find the answer, Jonathan Haidt delves into the nature of morality, following the pursuit of it from philosophy to evolutionary psychology. Haidt produces three core ideas: one, David Hume was correct in positing that people are more intuitive than rational; two,  moral concerns don't have a singular source, but fall along six separate axes,  each derived from our natural history, despite being couched in flourished religious and philosophical language; and finally, that morality is double-edged sword, binding us with one another as well as against others. Haidt's work is impressive in its breadth, drawing on sources as diverse as Plato, Emile Durkheim, and E.O. Wilson, and in its delivery. Though he covers a lot of territory in a compact book, Haidt constantly works to keep readers aware of how all of the ideas discussed connect together.

The grand idea underlying all this is that morality is neither an objective truth that can be deduced via logic by anyone old enough to reason, nor is it completely subjective, an artifact of culture that is deposited into a blank slate of our infant minds. It is instead a product of evolution. Our instincts for morality are kin to our sense of taste:  there are different flavors of moral concern, and each of them played a part in our species' development. The natural basis for morality is being eagerly explored by scientists like Frans de Waal, who has demonstrated how chimpanzees can empathize with one another, and sense when others are being treated unfairly.  Caring for one another is a mammalian strength, but there is more to morality than care and fairness. There are also senses of loyalty and deference to authority useful to tribes competing against other tribes, and a sense of 'sanctity' that buds off our natural feeling of disgust that keeps us away from unhealthy influences. Our instincts may be strengthened by rationalistic arguments or ritual, but neither can conceal their source,  nor operate independently from it.

Haidt sees our moral-political instincts as particularly far-developed as compared to other primates, though. Although alphas in chimpanzee troops do have a political role in mediating disputes, they are not kings: they do not command the tribe to go here or there, or make plans for its future well-being. Haidt believes natural selection has favored our 'righteous' (political-religious-moral) instincts in this regard  out of necessity, because for thousands of years we've had to regularly deal  with so many of our own numbers:  instincts which promoted order and cooperation were favored, and those populations which most exhibited them flourished, while populations that didn't disappeared. Religion, too, played a powerful part. In Haidt's view, we are not merely instinctive creatures who one day stumbled upon culture and started happily passing it down to the next generation like a good stick. We have evolved to be dependent on culture, and this is why religion is such a universal and powerful  trait of human kind.  Religion is first and foremost about morality and keeping the tribe together:  ideological religions like Christianity and Islam are fairly novel.  

These instincts are not part of the past; they are present, with us now.  Haidt examines US political parties by this six-taste model and concludes what while liberals depend strongly on the Care and Fairness feelings, and Libertarians are somewhat obsessively fixated on the Liberty-Oppression axis (which is a 'new' taste that developed fully after we'd become tool-users), conservatives draw marginally from each 'taste' equally across the spectrum.Like all products of evolution, our righteous instincts are a trade-off. A dog with long legs runs fast, but loses heat more quickly than a short-legged rival -- and morality which evolved in the atmosphere of inter-population competition is all about Us vs. Them.  When we rally towards an 'us', we draw away from a 'them'.  In light of that, Haidt ends the book by offering ways people of varying political opinions can argue more constructively. He first asks readers to keep in mind that people who disagree with us may simply be drawing on another set of instincts and beliefs:  you are not the center of the universe, and those who are different from you are not the Evil Villain set against you in some colorful psychodrama. We must labor to discern where people are coming from if we intend to communicate. Secondly, he draws on his own experience as an idealist-turned moderate to detail what liberals, conservatives, and libertarians can learn from one another: markets are magic, but not perfect -- and if something isn't  good for the beehive, it can't be good for the bee.

The Righteous Mind is  astonishing:  the argument masterfully organized and sympathetically voiced from an author who distills a wide range of research from across the intellectual spectrum into a reflective, wise work.  This is very much recommended.

Related:






Wednesday, August 21, 2013

The Making of the Fittest

The Making of the Fittest: DNA and the Ultimate Forensic Record of Evolution
304 pages
© 2006 Sean B. Carroll



Sean B. Carroll's The Making of the Fittest examines the genetics of evolution, relating to readers not only how changes come about and are transmitted to the next generation, but how our genes demonstrate the passing of an evolutionary river out of Eden with the same surety that the flattened plains of the midwest testify to the passing of glaciers eons ago. After detailing the myriad ways in which genetics illuminates the inner workings and history of evolution, Carroll casts a critical eye against proponents of intelligent design and creationism.  In the stressful, chaotic world which all organisms inhabit, where circumstances and relations between prey and predator are in a state of constant flux, there is no room for grand designs:  only on-the-hoof and on-the-fly jury-rigging to respond to a given moment's crisis will do. Making of the Fittest supplies readers with both broad principles (the evolutionary arms race, in which no species is ever the 'perfected' winner, only carrying temporary momentum in the battle for survival) and specific practices, like how complex organs are formed by cobbling together smaller ones.  Though a short-enough work, it seems more technical than many other works on biology, probably because it focuses on the nitty-gritty details of genetics: one chapter is called "The Everyday Math of Evolution", and concerns mutation rates. Though of interest to general science readers, a little genetic refresher might be helpful before starting in.  


Wednesday, May 8, 2013

This week at the library: the cosmos, Jane Austen, zombies, and the Middle Way




-- Minireviews -- 




Some zombies like to lurch about groaning for brains. Some zombies like to ride the escalators, listen to Frank Sinatra, and daydream about their past life. That's R,  a zombie who has forgotten most of his life, even most of his name.  R is of the mobile damned shambling around a ruined Earth, living in a hive of the undead in an abandoned airport. He sometimes goes into the remains of civilization to find someone to nibble on. Brains are especially fun, because eating them allows the diner to experience the memories of the dined-upon. It adds a bit of color to the zombies' dreary, grey not-lives. But when one young man dies saving his girlfriend's life and R munches down on his memories of growing up with her, R unexpectedly develops a crush -- and instead of turning her into a second course, he totes her home and hides her from his moribund brethren.  Such is the beginning of Warm Bodies, a novel of the living and the damned, and the bridge between them.  I checked it out not because I like zombies, but because a friend of mine -- a mature, knows-how-to-manage-her-time-well friend -- stayed up all night reading it. While the premise intrigued me, the humor and earnestness of a zombie yearning for more, even love, snookered me completely. I read it in one sitting, as it's the kind of novel that doesn't let you go away: it continues to rise in intensity until the very end.

                                                             

With Warm Bodies out of the way, you know now that the title does not refer to my reading Pride and Prejudice and Zombies again. My Jane Austen reference was to The Jane Austen Book Club, a novel  which covers the stories of five women and one man who get together once a month and discuss a given Jane Austen novel, each taking it in turn to host. As a guy who has read Pride and Prejudice, I thought it might be fun to see another fellow go through it. His responses aren't all that remarkable. I hate to admit it, but this is the rare instance wherein a book doesn't compare favorably to its movie  Admittedly, I saw the movie before reading the book, and in fact read the book after finding out it was the source for a money I thought hilarious. (The Austen-reading man is developed far better in the movie: he's a riot: I screamed in laughter at the faces of the women as he, an SF buff, tried to compare the plot of an Austen title with the development relationship of Luke and Leia through the original Star Wars trilogy.  Great movie, all-right book: I might have enjoyed it better had I actually read more than one Austen novel. It made me feel guilty, actually..




I also read Buddhism without Beliefs by Stephen Batchelor, which wasn't as ferociously compelling as I thought it might be, possibly because I've taken Buddhism's extrareligious applicability for granted for a few years now.  Batchelor treats Buddhism as a practice in response to certain realities, and invites readers on meditations to cultivate a sense of compassion within them. Batchelor's philosophical explanations sometimes seemed like vague esoterica (the chapter on emptiness, for instance), others were eye-opening, like the section on no-self. He compared us to clay spinning on a wheel:  the thing that emerges is the result of a lot of actions acting in concert: the constituency of the clay, the pressure, the wheel; there is no ideal Pot that will suddenly materialize there. The same is true for us: there is no ideal Self floating around inside us, or out in the ether: we as beings are being constantly created by drives internal and external.



And on a final note, a book I need to re-read because it's been a few months since I finished it:  The Universe Within reveals the profound connectivity of the universe, exploring the ways our biology has been shaped by astrophysics and geology. But it's not actually about us: his account demonstrates how all of nature is bound together in cycles -- water evaporating into the air, then returning as rain; sea crust being formed at ridges, and dissolved again in volcanic explosions --  and how no field of science can exist without connection to another. A rock can tell you about physics, chemistry, and biology.  Had the book been about the interconnectedness of the sciences, it would have been a triumph. It's supposed to be about how these processes have shaped human beings, though, and the human connection is added in only tangentially at the end.

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Today I also received two books through interlibrary loan: Michael Pollan's The Botany of Desire, which examines human-plant coevolution, and Garbage Land by Elizabeth Royte.  I'm looking forward to both:  Pollan is a weird author in that I'll finish his books regarding them too problematic to recommend, and yet I never stop thinking about them. Neither The Omnivore's Dilemma nor In Defense of Food are never far from my mind.

Look for more food books as the spring matures!

Friday, December 21, 2012

The Humans Who Went Extinct

The Humans Who Went Extinct: Why Neanderthals Died Out and We Survived
© 2010 Clive Finlayson
256 pages



Whatever happened to the Neanderthals? Did Homo sapiens drive our beefy cousins into extinction in the first of many exercises in genocide as we spread across the planet? Poppycock, suggests Clive Finlayson, to whom such a suggestion is the very height of hubris. His The Humans Who Went Extinct paints of a picture of generations of climate change hitting the planet like a rolling barrage, stressing increasingly marginal bands of hominids -- humans and Neanderthals alike. Eventually the Neanderthals succumbed; the difference between the species, Finlayson writes, is that human populations were lucky enough to be in areas where they could adapt to the unpredictable environment. 

I've never had a problem with the Humans Are Homicidal Maniacs theory as applied to Neanderthal death, because we have a proven track record in that regard. Name a living species, and we've probably driven most of their extended family into extinction. Finlayson thinks the idea is rubbish, and while he's at it he also doesn't cotton to the idea of humans being responsible for other mass extinctions, like the mammoths. No, the malefactor was climate change, and climate change alone. Neanderthals weren't the slow, stupid brutes that people like to fancy themselves as having killed off in a feat demonstrating superior ability and intelligence: they were bigger-brained than we were, using tools and creating art just as we did. And their kill sites demonstrate that they were an adaptable and agile species to boot, devouring tricky prey like rabbits and birds.

Finlayson's work is very much inspired by Guns, Germs, and Steel, which he refers to repeatedly: his last substantive chapter leads directly into Diamond's work, which demonstrated the importance of geography in human affairs. In Humans Who Went Extinct, geography and climate are the main actors. He relies both on traditional archaeological evidence and genetic tracking to put forth his case, but the overweening emphasis climate change seemed a bit much for me. I can accept human populations being marginal and strained, but surely we bear some responsibility? In those instances where Sapiens and Neanderthals shared the same area, I find it hard to imagine the two living in peace.  Part of the difficulty for me in accepting Finlayson's arguments wholly is that the evidence is hard to come by, relying in part on inference. The scope of the question also poses a problem for anyone looking for definitive Answer: the drama of extinction played out on a a stage that encompassed most of the "old world", and thousands of years. My biggest beef with Finlayson is  his dismissal of our having any role in killing off any of the ice age fauna, though that's only a sidenote and he may have been referring only to the European species.

The Humans Who Went Extinct gives readers curious about the world early humans lived in something to chew over. Its view of that world as being turbulent and hostile, one that we were lucky to survive in, let alone conquer, is definitely one to consider, as is his depiction of the Neanderthals as people quite like us who had the misfortune of being in the wrong spots of the globe at the wrong time, whose population bottlenecks resulted in extinction.


Tuesday, July 31, 2012

The Ghosts of Evolution

The Ghosts of Evolution: Nonsense Fruit, Missing Partners, and Other Ecological Anachronisms
© 2000 Connie Barlow
291 pages

Grocery stores are excellent places to encounter ghosts. They lurk in the fruit section, feasting on anachronisms.


The biological world is a wondrous web of connections between various animals and plants, and such connections are the source of evolution’s “endless forms most beautiful”. Not only does the contest between predators and prey – a biological ‘arms race’ – drive evolution, creating faster feet, sharper brains, and more discrete camouflage, but the mutually-supportive relationships between species shape them toward one another’s uses, , like leather molding itself into a glove over an offered hand. But what happens to the glove when the hand is ripped away – when one part of a cooperative pair vanishes into the mists of history and leaves its partner alone? Said partner becomes a living anachronism, and such anachronisms and their ghostly partners are the subject of this fascinating bit of science journalism that may be most readers’ introduction to the field of paleoecology.

Like an ethereal spectre waiting at a window for her beloved, every spring trees throughout the western hemisphere produce fruit for animals which no longer exist to consume them. The two American continents once looked very much like Africa,  being home to massive beasts. While some are familiar to us, like the mammoth, others are fantastic (sloths that make grizzlies look like pups?) and still others just seem misplaced, like American species of lions and tigers (andbearsohmy).  Barlow and her associates take a forensic approach to uncovering relationships between extinct and extant species. Although some bits of evidence seem obvious -- fruits and seeds which are too large for the mouth of any living species, but would have been easily gobbled up by the elephant-like gomphotheres --  her work relies on a wide variety of evidence.  Mouth sizes aren't everything: a given animal's intestines must also be taken into consideration. Some fruit require the digestive assistance of bacteria; some seeds need to be softened by stomach acid, or battered by gizzard stones before they can germinate.  So varied are the pieces of the puzzle that Barlow establishes a diagnostic profile for ascertaining if a given species is anachronistic, one that also determines the degree of anachronism.  While some species have found new markets for their produce (so to speak) in the form of horses and cattle brought over from Europe, others see their entire offering of fruit go to waste every year, and have survived the death of the megafauna only because they're exceptionally long-lived species who sometimes get lucky.In addition fruit, Barlow also illustrates how many plants are attempting to defend themselves against the muzzles and digestive systems of animals who haven't been around for centuries


Ghosts of Evolution is one of the most fascinating science books I've read in a long while. Like Sherlock Holmes taking Watson along to investigate a mystery in Victorian London, so Barlow takes the reader through the Pleistocene jungles with a grand mystery of her own. The text isn't as formal as most -- more a journalistic account of Barlow's investigation, and replete with dialogue between herself and a colleague as they puzzle matters through - but it's teeming with interest. Not only does she illustrate the rich biological heritage of the Americas while piecing together the puzzle, but what she does find offers lessons for modern-day conservation efforts. If we can figure out what kind of dynamics kept the landscape healthy in the past, perhaps we can make efforts to restore it. Her epilogue contains information about ecological approaches that have been inspired by work in this field: for instance, the idea that camels should be introduced to the North American desert plains to feast on certain pervasive species of scrub that have been allowed to become overly dominant thanks to a lack of natural predators....a lack created when said predators suddenly disappeared shortly after the arrival of humans in the Americas.





Saturday, June 2, 2012

Why We Get Sick

Why We Get Sick: the New Science of Darwinian Medicine
© 1994 Randolph M. Nesse, M.D; George C. Wiliams, Ph.D.
290 pages


Years ago I read an exceptional book on evolution by David Sloan Wilson. I say exceptional because it advocated for freeing evolution from being mere natural history: instead, Wilson argued that we should use it to understand all matters biological, including medicine. He used as his example the case of morning sickness in pregnancies, revealing research that illustrated that far from being a problem to be solved, morning sickness is an adaptive behavior which protects fetuses from foods that might be toxic to them in their highly vulnerable state. This application of evolution floored me, and so you can imagine my delight to discover an entire book on the subject, Why We Get Sick.

For the most part, Why We Get Sick fulfills my anticipation, though its authors are writing mostly to introduce the concept of evolution-informed medicine to the public. Though they share the insights that research with this focus have revealed already,  in any more instances they can only offer speculation, as Darwinian medicine is still quite new. The book covers general health, and explains the science of injuries, nutrition, and sickness. They establish early on that the Darwinian model can help us understand a given disease's ultimate root, and avoid prolonging it in our clumsy efforts to dispels the symptoms. Often symptoms of a disease are actually the products of our own immune system, and if we disrupt those defenses the disease itself is given free reign. Fevers, for instance, are one of our body's ways of disrupting an infection. It doesn't matter to our genes if it makes us uncomfortable: they're more concerned with killing the invaders. But the invaders have their own defenses, and they adapt a lot more quickly than we do -- another reason some diseases to be here to stay, like the flu. The existence of multiple flu strains and our constant attempts to find new ways to kill them are evolution in action, the ongoing biological arms race.  Other physical ailments are hangovers of evolution, like our back problems and heel spurs;  walking upright on two feet is something our bodies are still getting used to. We haven't even started adapting to novel environments, another element of disease: we have bodies accustomed to hardship now living in a world of abundant, cheap food and easy living. Little wonder we struggle with obesity and problems of physical inactivity. And then there are the genetic diseases and strangely adaptive byproducts of mental illnesses...

Why We Get Sick is compact, dense, and brimming with information: the authors are writing to introduce people to the viewpoint,  so there's lot of enticing speculation. If one section doesn't catch your interest, rest assured another will. I for one am quite excited about this novel approach to medicine, and if health or evolution are of any interest to you, this intersection of the two should prove fascinating.

Related:




Wednesday, May 9, 2012

Catching Fire


Catching Fire: How Cooking Made Us Human
 © 2009 Richard Wrangham
309 pages


Cooking has created a great many fantastic dish throughout the centuries, but Richard Wrangham holds that the culinary art's greatest triumph is us -- humanity, for the advent of cooking substantially altered our biological and cultural revolution. Not only did it give us smaller guts and smaller mouths, but Wrangham also believes the cooking process set the stage for the sexual division of labor and largely monogamous pair-bonds. Although the biological claim is safer,  both are fascinating to consider, for if they are true then a 'natural' diet for human beings is one which is cooked. Additionally, if this is the case then a cultural adaption has manipulated biology, and in a profound way.

The genius of cooking is that it allows us to maximize the potential calorie intake of a given foodproduct. Raw food is tough; herbivorous animals in particular spend their entire day grazing and chewing. Their intestines must work throughout the day, and often into the night, breaking down ingested food into the fuel the body so desperately needs. But all that work takes energy itself. Meat eaters have an easier time of it,  but muscle tissue is resilient; thick, tough, and tightly connected. At the outset, Wrangham establishes that the ease of digestion is fundamentally important, citing cases in which two sets of animals were given identical amounts of the same food; rats, for instance, given a set number of food pellets.  Each group's calorie count was identical, but one group had "soft" pellets, or pellets in which air had been inserted. The group eating soft pellets put on muscle mass far more quickly than the group chewing on hard pellets; in fact, the soft-pellet group became obese. In processing and cooking food -- grinding seeds, tenderizing meat by pounding it with rocks, and then heating items -- we greatly reduce the amount of work our bodies must do to digest them.  The more processed they are, the more efficiently we can take in the calories...and while easy calories have become a problem to us now, in the days prior to agriculture it was a godsend.

Cooking not only gave us a competitive edge, it altered our physiology. We no longer needed huge teeth for grinding raw muscle, nor expansive intestines for long-term digestion...and when those became smaller, we had more energy to invest in brains. Although Wrangham doesn't speculate on the result of increased intelligence and leisure time, one can assume the combination had a dramatic effect on human culture.  Fundamentally, the author contends that the division of labor roles could have never transpired without cooking. Raw food requires so much time to chew and digest that men wouldn't have been able to spend their days hunting (or lounging around, as the case might be) if they could not have come back to the tribe camp with a cooked meal waiting for them.  Since women, the gatherers, provided the economic foundation of the tribe -- supplying food if and when the men failed to deliver -- one might think this gave them the power. Instead, cooking became a liability. Women tending food at a fire needed to protect it, lest the food be stolen.  Wrangham believes that pair bonds arose for this reason: women provided the food, and men protected it.  Although this is more of a stretch than the biological claims, requiring more inference on our part,  it offers a count to the usual sex-driven conception of pair bonds. Time and again Wrangham documents tribes that don't seem to care if married women sleep with other men...but woe betide them if they cook for other men.

Wrangham ends by chastising nutritionists for missing the point about food, and particularly for believing every food delivers a set amount of calories or nutrients, when that amount greatly varies depending on how the food has been processed and cooked. Given the obesity epidemic, the relationship between processing and calories is certainly one worth our consideration...and Wrangham's work is wide open to lay readers, so dig in.

Related:
ScienceFriday interview with Richard Wrangham regarding Catching Fire
Guns, Germs, and Steel, Jared Diamond


Saturday, March 31, 2012

Life Ascending

Life Ascending: the Ten Great Inventions of Evolution
© 2009 Nick Lane
344 pages


For my money, few subjects are as impressive, beautiful, and awe-inspiring as biology and evolution. Is there a greater drama in the cosmos outside the long play of life, its actors emerging epoch by epoch -- many vanishing into the darkness once more, but not before leaving their mark upon those that follow them? The thought that the immense and varied mass of life on this earth, so rich as to beggar description, is ultimately unified by common ancestry still staggers me. Earth's history of life is a parade of 'endless forms most beautiful', and in Life Ascending Nick Lane revisits some of the most pivotal moments in evolution history: the origin of life, the development of DNA, and the rises of photosynthesis, complex cells, sex, movement, sight, hot blood, consciousness, and death.

Though I've never heard of Lane, he apparently has a strong following in Britain. I can certainly see why. He is easily one of the clearest science communicators I've read, using lively examples to illustrate key points, like describing the two different kinds of chlorophyll (both vital parts of photosynthesis) as a grasping miser and a street hustler. One forces water to surrender an electron; the other forces carbon dioxide to accept the same. Lane's specialty is biochemistry, so he is strongest early on when writing on DNA and photosynthesis; his treatment of topics like consciousness is comparatively lighter, but still raises up interesting questions, and I appreciate an author far more for acknowledging his limitations than attempting to sound authoritative in spite of them. In any given chapter, Lane first explains the significance of a key invention, and then -- as current scientific knowledge allows -- delves into how it functions and its origins.  He does not necessarily devote equal time to all three sections; in the chapter on movement, for instance, he wastes little time explaining why being able to move is an asset, choosing to devote most of the chapter on how muscles function. Later on, when writing on consciousness, Lane concerns himself with the meaning of consciousness rather than the cause of it, which we don't fully understand. Lane is thorough in explaining how we came to our current understanding, often working through rival theories before arriving that which currently prevails, or is the most accurate in his view. What I appreciate most about Lane is his ability to break down a topic into its most basic parts, allowing lay readers to arrive at a basic understanding of the subject at hand without being overwhelmed by information -- but he's not so general as to leave us ignorant of the actual facts, beyond generalities that we can't explain. The weakest section of the book is that of death: Lane doesn't explain why it is a wonderful invention. He mentions that it is tied to sex, and is thus tangentially important for that reason, but the bulk of the chapter is written on our attempts to find out why we age, with an eye for 'curing' it. He doesn't mention the role that death plays in evolution, which is a curious omission.

The highest praise I can give Lane is that he takes me back to 2006, when I was just starting to realize how incredibly wonderful and interesting science could be. A keeper, certainly, and one to revisit in the future and enjoy again.

Related:
"Be Mine" (Creation, the Universe, and the Evolution of Life set to a Funky Beat). This is a YouTube song about the history of the universe that ends with an unexpected proposal;  the history of life section actually follows this book in part.

Thursday, February 17, 2011

This Week at the Library (9 Feb - 15 Feb)

February has been dominated by fiction so far, helped in part by my recent back of Trek acquisitions which I've not yet exhausted. I've also been in a weird funk as of late, unable to find science and even history books of interest to me: Asimov's history of The Near East was a book I purchased and saved for such just an occasion. It succeeded in whetting my appetite for more history.

Last week I added a new label, 'military', which applies toward works (fiction or otherwise) expressly about combat or military action. I've also added a new page this week, which keeps track of my Nonfiction Reading Challenge reads.

In addition to two excellent Trek works (Summon the Thunder and Over a Torrent Sea), and a short police story, I read A History of Life on Earth by Jon Erickson. I didn't do full comments on it because as I found out, it's more of a reference book focusing on planetary science and evolution, tracking the changing nature of the Earth and the forms of life which dwell upon it.  The book mostly describes the history of life and is laden with charts, maps, and illustrations that range from beautiful to embarrassingly simplistic. Erickson frequently comment on how geography drives evolution, and offers a look into how planetary scientists have struggled to piece together a history of the planet.

I am also halfway through The Ten Great Ideas of Science by Peter Atkins.


Since the challenge began, I have read eight applicable books, two of which I added this week. I've created a 'page' which contains the full list.


  • The Near East (History)
  • A History of Life on Earth (Science)




Next Week's Potentials..

  • I may very well finish The Confessions this week, as for the first time in months I am excited about reading it. I don't know why, but I am feeling recharged in other areas as well. 
  • The Ten Great Ideas of Science, Peter Atkins. I am rather proud of the way I have been faithfully reading this every night, though my pace is variable. I've gone through a chapter in a day before, and spent three days pondering four pages of details on RNA. 
  • I have a history of Japan I checked out last week. It tried to hide itself between the bed and another piece of furniture, but I found it today. 
  • The Revolutionist by Robert Littell is the story of an American who goes off to fight in the Russian Revolution.




Wednesday, September 29, 2010

African Exodus

African Exodus: the Origins of Modern Humanity
© 1996 Christopher Stringer and Robin McKie
282 pages

"Light will be thrown on the origin of man and his history..."

Ever since Charles Darwin made that first and solitary reference to human evolution in The Origin of Species, people have wondered at our history as a species. It is a history that began not by the banks of the Tigris, with the use of writing and agriculture, but elsewhere and much earlier, when creatures who were human-like became human. Who where those ancestors, and when did we become human? These are questions which have spawned contesting ideas, two of which are discussed at length in this book: the multiregional hypothesis, which posits that humanity evolved in five distinct places throughout the globe and merged into a larger combined family with distinct 'races'; and the Out of Africa theory, which holds that humanity evolved in Africa, expanding from there throughout the globe and diversifying in various ethnic groups. Stringer advocates the later in African Exodus, a history of human evolution and an examination of evolution's consequences for humans living in the 21st century.

After an opening chapter focused on Stringer's graduate work (helping to establish that humans did not evolve from Neanderthals), he launches into a study of where both originated. After piecing together a history of human evolution beginning with the first hominid who took to walking upright in Africa's savannahs, Stringer uses on fossils, DNA (particularly mitochondrial), and language studies to confirm that the epicenter of human expansion began in Africa. Time and again in reading this book, I was impressed by our species' sheer virility. We are a people forged by hardship, who have spread across the globe so quickly that individuals from far-flung parts of the world are more genetically similar than two gorillas living in the same hundred--square-mile patch of forest. The three species of chimpanzees are ten times as genetically diverse compared to one another as all of our ethnic groups, despite the fact that we see the chimps as identical to each other and ourselves as radically different.

The ending chapters were a pleasant surprise, as Stringer wrote of the merits of evolutionary psychology. Although we continually imagine ourselves as distinct from the animal kingdom, we are animals even to our bones -- and our evolutionary heritage continues to shape our behavior and our bodies' response to living in the 21st century.  The book as a whole is quite a treat: Stringer and McKie have produced a book comprehensible to the lay reader which will undoubtedly enrich our understanding and appreciation for the history of our species. Especially interesting for me was the treatment of Neanderthals, who were as intelligent and cultured as early humans. They appear to have taken to the sedentary lifestyle before their sapiens contemporaries, but they were out-circled by the aggressive lightweights who were modern Europeans' ancestors.

Recommended!

Related:

  • Before the Dawn, Nicholas Wade
  • The Third Chimpanzee, Jared Diamond
  • The Naked Ape, Desmond Seward


I haven't read the latter two, but I've read their authors and intend to get around to those works.

And we are scatterlings of Africa, both you and I
We're on the road to Pheleamunga, beneath a copper sky
And we are scatterlings of Africa, on a journey to the stars
Far below we leave forever dreams of what we were.
(Johnny Clegg, "Scatterlings of Africa")


Thursday, November 5, 2009

The Greatest Show on Earth

The Greatest Show on Earth: the Evidence for Evolution
© Richard Dawkins 2009

470 pages

2009 is the "Year of Darwin", giving us nice round anniversaries for both Charles Darwins' birth and the publication of his most famous work, The Origin of Species. Accordingly, books, magazine articles, and television specials have been produced to take advantage of the increased attention on Darwin and his life's work. Author Richard Dawkins is a forceful but genteel proponent of both evolution via natural selection and atheism, meriting him praise and contempt from various parties. I rather enjoy interviews with Dawkins, although I sometimes struggle through his popular science works. Struggling was not the case with The Greatest Show on Earth, in which Dawkin puts forth the evidence for evolution.

Greatest Show on Earth is -- based on my experience -- one of Dawkins' more readable works.After arguing for the importance of evolution, he begins to lay out his case, covering various lines of evidence -- fossil records, mutation rates, the age of Earth, evidence of evolutionary change in contemporary animals' biology (vestigial organs, organs that have changed uses, bone structure adapting from one purpose to another), so-called "missing links", -- before wrapping things up. He argues well, using vivid examples and analogies. Although Jerry Coyne's book may be more tightly focused,  Dawkins is perhaps more thorough. On a final note, the color pages in this book are absolutely gorgeous, by far the best-done illustrative pages I've seen in all my reading, topping even Thomas Cahill's magnificent offerings in Mysteries of the Middle Ages. The pages are absolutely stunning: even if you can't  buy the book, I'd recommend finding it in the bookstore and looking for the colored photograph sections. They're intense. The book is well written, sharply argued, and overall well done. It's an obvious reccommendation to those interested in biology, evolution, or Dawkins.