Word: uprights
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...with heart problems, BORIS YELTSIN sure is frisky. As he arrived at what was supposed to be a press conference regarding his coming summit meeting with President Clinton, Yeltsin playfully tweaked two female secretaries. One woman, startled by this gesture of fellowship, sat bolt upright and spun around; the other barely reacted. The oddball presidential games over, the gathering got serious. Yeltsin announced that he was firing his Foreign Minister; the following day he changed his mind...
Finally, it is an opportunity, in what has been a catastrophic year for race relations, for the general American public to see black men as responsible, upright and involved citizens. There is no doubt that it would have been much simpler if a generally well-respected person had planned a demonstration for blacks to recommit themselves to caring for the community and securing the family...
...fundamental mysteries of human evolution. When did the first apelike creatures begin to walk upright? Scientists believe this transformation probably occurred between 4 million and 6 million years ago, but until recently they had no fossils to back up their hypothesis. In 1994 researchers reported that they had found teeth and other fragments of a 4.4 million-year-old hominid in Ethiopia. But without key bones from below the waist, they could not say for sure how the animal moved...
...less than a year later, another team of paleontologists, led by Meave Leakey from the National Museums of Kenya and Alan Walker of Pennsylvania State University, has announced the best evidence so far that a previously unknown species of hominid strode upright at least 4 million years ago. Their find, reported in last week's Nature, consists of complete upper and lower jaws, teeth from several individuals, a piece of skull, arm bones and a leg bone. Taken together, the fossils push the emergence of two-legged walking, or bipedalism, 500,000 years earlier than any other data had indicated...
...Turkana word for lake), is yet another reason why paleontologists are reconsidering some of their ideas about why the earliest humans stood up. According to one theory, as a change in climate transformed Africa's moist forests into drier grasslands, evolution favored hom inids that could stand upright in order to spot predators lurking in the tall grasses. Other researchers argue that an upright posture lessened the heat the animals absorbed from the fierce tropical sun. Still others believe bipedalism freed the hands for carrying food or children over long distances. Such explanations appear to share a common flaw...