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. |
Dentro del libro
Resultados 6-10 de 68
... 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 there were no large luminous objects to disturb the ...
... radiation (about 400,000 years after the big bang), the universe grew increasingly cold and dark. But cosmic structure gradually evolved from the density fluctuations left over from the big bang. 100 million years 1 million years BIG ...
... radiation 2 reas The cooling of the hydrogen allowed the dark matter remained dispersed . The hydrogen settled into a disk at the center of the protogalaxy . 3 The denser regions of gas contracted into star - forming clumps , each ...
... radiation and matter outflows that may blow away some of the gas in the collapsing clump . But these effects depend strongly on the presence of heavy elements in the gas , and therefore they should be less important for the earliest ...
... radiation from sources such as quasars. Fu- ture observations of distant objects may help determine when the uni- verse's helium was ionized. If the first stars were indeed very massive, they would also have had relatively short ...
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 |