Word: lifes
(lookup in dictionary)
(lookup stats)
Dates: during 1990-1999
Sort By: most recent first
(reverse)
Given their 2 million-year-plus life-span, the australopithecines were surely one of evolution's better experiments. But nature is an inveterate tinkerer, even with successful species. Between 3 million and 1.9 million years B.P., several variations on the Australopithecus theme popped up in eastern and southern Africa, including A. africanus, A. aethiopicus, A. robustus and A. boisei. (Just to complicate matters, the last three are assigned by some experts to an entirely different genus, Paranthropus...
...directly. If justification required eyewitness testimony, we would have no sciences of deep time--no geology, no ancient human history either. (Should I believe Julius Caesar ever existed? The hard bony evidence for human evolution, as described in the preceding pages, surely exceeds our reliable documentation of Caesar's life...
...skeleton discovered in Portugal last December gives new life to the old idea. Co-discoverer Joao Zilhao, director of the Portuguese Institute of Archaeology, and consultant Erik Trinkaus of Washington University in St. Louis, Mo., claim that the 24,500-year-old remains of a four-year-old child show a mix of human and Neanderthal features. The boy could simply be the love child from a single prehistoric one-night stand--except that the last true Neanderthals had disappeared from the area at least 3,000 years earlier. Plenty of experts are unwilling to be swayed by romance, however...
...symbols, music, notation, language, feelings of mystery, mastery of diverse materials and sheer cleverness: all these attributes, and more, were foreign to the Neanderthals and are native to us," he writes in his 1998 book, Becoming Human. For the first time, innovation was a routine part of human life that could easily be shared with others--not just something that occurred every million years or so. Against that kind of competition, no other human species could hold...
Given this protracted struggle, Americans of goodwill might be excused for supposing that some genuine scientific or philosophical dispute motivates this issue: Is evolution speculative and ill founded? Does evolution threaten our ethical values or our sense of life's meaning? As a paleontologist by training, and with abiding respect for religious traditions, I would raise three points to alleviate these worries...