Evolution: A Scientific American ReaderScientific American University of Chicago Press, 2008 M09 15 - 312 páginas From the Scopes “Monkey Trial” of 1925 to the court ruling against the Dover Area School Board’s proposed intelligent design curriculum in 2005, few scientific topics have engendered as much controversy—or grabbed as many headlines—as evolution. And since the debate shows no signs of abating, there is perhaps no better time to step back and ask: What is evolution? Defined as the gradual process by which something changes into a different and usually more complex and efficient form, evolution explains the formation of the universe, the nature of viruses, and the emergence of humans. A first-rate summary of the actual science of evolution, this Scientific American reader is a timely collection that gives readers an opportunity to consider evolution’s impact in various settings. |
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... early universe . Satellites detect the cosmic background radi- ation left over from the early stages of expansion , providing an image of the universe on the largest scales we can observe . Our best efforts to explain this wealth of ...
... early universe ther- monuclear reactions produced elements heavier than hydrogen, includ- ing deuterium, helium and lithium. It is striking that the computed mix of the light elements agrees with the observed abundances. That is, all ev ...
... early universe was prevented by radia- tion pressure, but that changed when the universe had expanded to about 0.1 ... early universe with the lumpy distribution of galaxies in the present uni- verse. Astronomers know that the density of ...
... earliest stars made possible the emergence of the universe that we see today—everything from galaxies and quasars to planets and people. THE DARK AGES The study of the early universe is 13 The First Stars in the Universe.
... early universe based on the cosmic microwave background radiation, which was emitted about 400,000 years after the big bang. The uniformity of this radiation in- dicates that matter was distributed very smoothly at that time. Because ...
Contenido
Cellular Evolution | 85 |
Dinosaurs and Other Monsters | 169 |
Human Evolution | 249 |
Contents | 362 |
Illustration Credits | 364 |
The Evolution of the Universe | 1 |
Cellular Evolution | 85 |
Dinosaurs and Other Monsters | 169 |
Human Evolution | 249 |