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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... galaxies, the age of the universe probably lies between 12 and 20 billion years. (The range allows for the uncertainty in the rate of expansion.) Yet many researchers believe the density is greater than this minimum value. So-called ...
... galaxies close to us should look statis- tically the same as those far away. The big bang cosmology makes a differ- ent prediction: if galaxies were all formed long ago, distant galaxies should look younger than those nearby because ...
... galaxies formed. Neverthe- less, we do have quite a few pieces of the puzzle. Gravity causes the growth of density fluctuations in the distribution of matter, because it 10 p. j. e. peebles, d. n. schramm, e. l. turner and r. g. kron.
... galaxies themselves were probably assembled by the same process on a smaller scale. The growth of structure in the ... galaxies. A pressing challenge now is to reconcile the apparent uniformity of the early universe with the lumpy ...
... galaxies. We will also continue to study issues that the 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 ...
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 |