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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... evidence that galaxies are actually moving apart . Then , in 1929 , the eminent astronomer Edwin P. Hubble showed that the rate a galaxy is moving away from us is roughly proportional to its dis- tance from us . The existence of an ...
... evidence that the universe did expand from a dense, hot state, for this is the condition needed to produce the radiation. In the dense, hot early universe ther- monuclear reactions produced elements heavier than hydrogen, includ- ing ...
... evidence for the final stages of this ionization process. The researchers observed strong absorption of ultravi- olet light in the spectra of quasars that date from about 900 million years after the big bang. The results suggest that ...
... evidence suggests that they may produce rela- tively large numbers of massive stars. PUZZLING. EVIDENCE. This hypothesis about early star formation might help explain some puz- zling features of the present universe. One unsolved problem ...
... evidence suggesting that most of the ordinary matter and metals in the universe lies in the diffuse intergalactic medium rather than in galaxies. To pro- duce such a distribution of matter, galaxy formation must have been a spectacular ...
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 |