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Ardi; courtesy Science
October 6, 2009
Scientists Discover Oldest Human Ancestor, New Link in Evolutionary Chain
Anthropologists have found a skeleton of a human-like creature that lived more than a million years before "Lucy," opening a window into the early evolutionary period when humans diverged from a common ancestor with chimpanzees.

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In an effort to understand some of the basic tenets of physics, scientists and engineers fired a beam of protons around a 17-mile tunnel -- a successful first run for the world's most powerful particle accelerator.
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