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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... big bang cosmology makes a differ- ent prediction: if galaxies were all formed long ago, distant galaxies should look younger than those nearby because light from them requires a longer time to reach us. Such galaxies should contain ...
... big bang cosmology . background radiation has two distinctive properties. First, it is nearly. DENSITY even be possible , he thought , to detect remnant radiation from the primeval atom . But what would this radiation signature look like ...
... big bang cosmology. Second, the spectrum is very close to that of an object in thermal equilibrium at 2.726 kelvins above absolute zero. To be sure, the cosmic background radiation was produced when the universe was far hotter than ...
... big bang cos- mology implies, however, that life is possible only for a bounded span of time: the universe was too hot in the distant past, and it has limited re- sources for the future. Most galaxies are still producing new stars, but ...
... big bang cosmology does not address. We do not know why there was a big bang or what may have existed before. We do not know whether our universe has siblings— other expanding regions well removed from what we can observe. We do not un ...
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 |