Word: uprightly
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WALK BY Attention, parents: baby walkers--those wheeled contraptions used to prop up infants--may hinder your child's development. Data on 109 babies suggest that tots who scoot around in them are slower to sit upright, crawl and walk--and score lower on mental tests. Why? The walkers' large trays prevent infants from seeing their legs move, depriving them of feedback about how their bodies operate. They also keep them from grabbing--and learning about--things around them. That's the theory, anyway...
...kick knuckled through inside the left upright, and the two officials standing under the posts looked at each other and hesitated before calling the kick good...
...area at about that time. Now Asfaw and White's team could make a circumstantial case that their species, A. garhi, was the gifted toolmaker. If so, this was a crucial bit of scientific sleuthing. In the 2 million years since the first human ancestor began to walk upright, nothing much had changed. Now something had. Rather than just using sticks and stones to leverage innate abilities--something done by plenty of animals, from chimps to otters to finches--someone had deliberately selected and modified specific raw materials in a sophisticated and consistent way, and with careful intent...
COMMENT Exactly where this primitive species belongs and whether it walked upright are still unknown...
...COMMENT] Shows that our ancestors walked upright at least 500,000 years earlier than previously known...