The widely publicized speech Tuesday by Barack Obama on race relations in the United States was another exercise in walking the political tightrope for the Democratic candidate in his closely contested struggle with Hillary Clinton for the party’s presidential nomination.
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A shape comparison of the most complete fossil femur (thigh bone) of one of the earliest known pre-humans, or hominins, with the femora of living apes, modern humans and other fossils, indicates the earliest form of bipedalism occurred at least six million years ago and persisted for at least four million years. William Jungers, Ph.D., of Stony Brook University, and Brian Richmond, Ph.D., of George Washington University, say their finding indicates that the fossil belongs to very early human ancestors, and that upright walking is one of the first human characteristics to appear in our lineage, right after the split between human and chimpanzee lineages. Their findings are published in the March 21 issue of the journal Science.
Sphere: Related ContentFive years after Washington inaugurated its “shock and awe” campaign, striking Baghdad with cruise missiles and precision-guided bombs, it has become abundantly clear that the war of aggression against Iraq has produced the greatest geo-political disaster in American history.
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