British virologist Carey tackles epigenetics with a passion to explain a rapidly developing and complex field.
Early on the author reminds us that a surprising finding from human-genome research is that only two percent of the DNA in our cells codes for proteins used in the body. Though it was once fashionable to call the rest “junk” DNA, that’s not the case today. Some of this DNA is transcribed as “non-coding RNA” with various functions, and some codes for proteins that determine which genes are expressed and which genes are silent in a given cell type—a liver or a skin cell, for example—ensuring that when these cells divide, the daughter cells will be the same type. Epigenetics is the study of those DNA controls, the key players for which are proteins that attach methyl groups to selected parts of DNA and proteins that add acetyl groups to histones (proteins associated with DNA on chromosomes). None of these controls is evident when sperm meets egg and undergoes initial cell divisions, which explains why “embryonic stem cells” are prized for their ability to develop into any cell type. As Carey surveys the field, she dwells on early development as a critical period when environmental influences can affect epigenetic controls with long-term effects. Thus women pregnant in the first trimester in the infamous Dutch famine in World War II gave birth to offspring at increased risk for obesity as adults. Similarly, Carey explores epigenetic changes due to childhood abuse as contributing to stress-related illnesses in maturity. Epigenetic effects may also play a role in schizophrenia and chronic diseases, including cancer, and have already inspired new drugs to inhibit epigenetic controls. There is also fascinating research to explain, for example, why feeding honey-bee larvae royal jelly will turn them into queens and not sterile workers. Carey makes clear that debate and controversy attend this rapidly growing field, and she takes pains to explore alternate (non-epigenetic) explanations for various findings.
An exhilarating exploration of an exciting new field, and a good gift for a bright biology student looking for a career choice.Pub Date: March 6, 2012
ISBN: 978-0-231-16116-9
Page Count: 352
Publisher: Columbia Univ.
Review Posted Online: Feb. 20, 2012
Kirkus Reviews Issue: March 1, 2012
Categories: SCIENCE & TECHNOLOGY
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Bryson (I'm a Stranger Here Myself, 1999, etc.), a man who knows how to track down an explanation and make it confess, asks the hard questions of science—e.g., how did things get to be the way they are?—and, when possible, provides answers.
As he once went about making English intelligible, Bryson now attempts the same with the great moments of science, both the ideas themselves and their genesis, to resounding success. Piqued by his own ignorance on these matters, he’s egged on even more so by the people who’ve figured out—or think they’ve figured out—such things as what is in the center of the Earth. So he goes exploring, in the library and in company with scientists at work today, to get a grip on a range of topics from subatomic particles to cosmology. The aim is to deliver reports on these subjects in terms anyone can understand, and for the most part, it works. The most difficult is the nonintuitive material—time as part of space, say, or proteins inventing themselves spontaneously, without direction—and the quantum leaps unusual minds have made: as J.B.S. Haldane once put it, “The universe is not only queerer than we suppose; it is queerer than we can suppose.” Mostly, though, Bryson renders clear the evolution of continental drift, atomic structure, singularity, the extinction of the dinosaur, and a mighty host of other subjects in self-contained chapters that can be taken at a bite, rather than read wholesale. He delivers the human-interest angle on the scientists, and he keeps the reader laughing and willing to forge ahead, even over their heads: the human body, for instance, harboring enough energy “to explode with the force of thirty very large hydrogen bombs, assuming you knew how to liberate it and really wished to make a point.”
Loads of good explaining, with reminders, time and again, of how much remains unknown, neatly putting the death of science into perspective.Pub Date: May 6, 2003
ISBN: 0-7679-0817-1
Page Count: 304
Publisher: Broadway
Review Posted Online: May 20, 2010
Kirkus Reviews Issue: April 1, 2003
Categories: SCIENCE & TECHNOLOGY
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Yes: it's high time for a de-romanticized, de-mythified, close-up retelling of the U.S. Space Program's launching—the inside story of those first seven astronauts.
But no: jazzy, jivey, exclamation-pointed, italicized Tom Wolfe "Mr. Overkill" hasn't really got the fight stuff for the job. Admittedly, he covers all the ground. He begins with the competitive, macho world of test pilots from which the astronauts came (thus being grossly overqualified to just sit in a controlled capsule); he follows the choosing of the Seven, the preparations for space flight, the flights themselves, the feelings of the wives; and he presents the breathless press coverage, the sudden celebrity, the glorification. He even throws in some of the technology. But instead of replacing the heroic standard version with the ring of truth, Wolfe merely offers an alternative myth: a surreal, satiric, often cartoony Wolfe-arama that, especially since there isn't a bit of documentation along the way, has one constantly wondering if anything really happened the way Wolfe tells it. His astronauts (referred to as "the brethren" or "The True Brothers") are obsessed with having the "right stuff" that certain blend of guts and smarts that spells pilot success. The Press is a ravenous fool, always referred to as "the eternal Victorian Gent": when Walter Cronkite's voice breaks while reporting a possible astronaut death, "There was the Press the Genteel Gent, coming up with the appropriate emotion. . . live. . . with no prompting whatsoever!" And, most off-puttingly, Wolfe presumes to enter the minds of one and all: he's with near-drowing Gus Grissom ("Cox. . . That face up there!—it's Cox. . . Cox knew how to get people out of here! . . . Cox! . . ."); he's with Betty Grissom angry about not staying at Holiday Inn ("Now. . . they truly owed her"); and, in a crude hatchet-job, he's with John Glenn furious at Al Shepard's being chosen for the first flight, pontificating to the others about their licentious behavior, or holding onto his self-image during his flight ("Oh, yes! I've been here before! And I am immune! I don't get into corners I can't get out of! . . . The Presbyterian Pilot was not about to foul up. His pipeline to dear Lord could not be clearer"). Certainly there's much here that Wolfe is quite right about, much that people will be interested in hearing: the P-R whitewash of Grissom's foul-up, the Life magazine excesses, the inter-astronaut tensions. And, for those who want to give Wolfe the benefit of the doubt throughout, there are emotional reconstructions that are juicily shrill.
But most readers outside the slick urban Wolfe orbit will find credibility fatally undermined by the self-indulgent digressions, the stylistic excesses, and the broadly satiric, anti-All-American stance; and, though The Right Stuff has enough energy, sass, and dirt to attract an audience, it mostly suggests that until Wolfe can put his subject first and his preening writing-persona second, he probably won't be a convincing chronicler of anything much weightier than radical chic.
Pub Date: Sept. 24, 1979
ISBN: 0312427565
Page Count: 370
Publisher: Farrar, Straus and Giroux
Review Posted Online: Oct. 13, 2011
Kirkus Reviews Issue: Sept. 1, 1979
Categories: SCIENCE & TECHNOLOGY
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