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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... organisms . Organisms evolving little since their separation from their last common ancestor have similar RNA base sequences . Those organisms closest to the " root " —or last common ancestor of all living organisms — are hyper ...
... organisms can use. The plentiful availability of biogenic elements on Mars's surface com- pletes life's requirements. Given the presence of water and energy, Mars may well have independently originated life. Moreover, even if life did ...
... organisms have colonized every possible niche of the earth . Death and evil will take their toll , pain and worry may never go away , but somewhere we expect that some of our children will carry on . Or maybe not . Remarkably , even ...
... organisms could slow their metabolism as the universe cooled , they could arrange to consume a finite total amount of energy over all of eternity . Although the lower temperatures would also slow consciousness — the number of thoughts ...
... organisms could not lower their temperature further. They would be forced instead to reduce their complexity—to dumb down. Before long, they could no longer be regarded as intelligent. To the timid, this might seem like the end. But to ...
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 |