How raw meat -- and our ancestors' inability to chew it -- changed the course of human evolution
Paleoanthropologist Daniel Lieberman chewed raw goat meat for the sake of science, so he knows from experience that it's a challenge."It's a little salty, and it's very tough," the Harvard University professor said. "You put it in your mouth and you chew and you chew and you chew and you chew, and nothing happens." As Lieberman discovered first hand, modern human teeth are not suited to breaking chunks of raw meat into pieces that are small enough to swallow.Effective raw-meat eaters like wolve..>> view originalAmazing Total Solar Eclipse Photos Show 'Black Hole in the Sky'
Photographers turned out in force to capture views of the spectacular total solar eclipse visible from Indonesia and across Southeast Asia Wednesday (March 9) — and their varied, beautiful images show the many faces of that celestial event. Here's a sampling of the amazing solar eclipse snapshots we found in our mail today. NASA tracked the solar eclipse from Micronesia, capturing stunning video of the moon blocking the sun, and many other eclipse-chasers also had their cameras ready fo..>> view originalFirst-of-its-kind cataract surgery using stem cells shows promise
A new form of cataract surgery using a patient's stem cells has restored vision in babies for the first time, and someday the technique may hold promise for millions of older Americans who undergo traditional cataract eye surgery every year, say scientists who developed the new procedure.Eye experts across the country who spoke with CBS News are alternately excited and cautious about the findings, published Wednesday in the journal Nature.The procedure, developed by researchers at the Universit..>> view original
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