南非發現全新人種或將改寫人類進化史

2015/09/14 瀏覽次數:7 收藏
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  9月14日CNN聽力:南非發明全新人種或將改寫人類進化史


  Welcome, students, teachers, and viewers worldwideto CNN STUDENT NEWS.

  Today's is the 14th anniversary of the September11, 2001 terrorist attacks in the U.S.

  And our in-depth coverage of that historic and tragicevent begins in just a couple of minutes.

  First up, a natural disaster in Japan.

  Parts of the eastern mainland are unrecognizable.

  A tropical storm named Etau made landfall there Monday, dumping as much as two feet of rainover a region that had already seen daily rainfall for weeks.

  Officials say more than 170,000 people have been evacuated.

  The Japanese military has rescued dozens of people from their homes and more rain andflooding are expected-flooding being the most deadly part of storms.

  The Pacific island nation is especially prone to typhoons, tsunamis and earthquakes.

  From Japan, we're moving over to South Africa where a professor claims to have discovered anew species of human relative.

  In 2013, an amateur caver found a fossilized jawbone deep in an underground chamber.

  It led to the largest discovery of its kind in the continent of Africa.

  And the director of the recovery expedition says the find turns science on its head.

  This is like opening up Tutankhamen's tomb.

  Berger and his team of scientists say they've uncovered a new species of the human familytree.

  They call it Homo naledi.

  What they found was extraordinary-a chamber of more than 1,500 fossilized bones,coming upwith the controversial conclusion that this is a burial ground, and that Home naledi couldhave used fire to light the way.

  That's extraordinarily human-like.

  It is in part superficially, short fingers, long thumb.

  Homo naledi is not human, but at times comes close.

  The original fossils are a strange mosaic of ancient and surprisingly modern, a brain no biggerthan an orange, but feet almost identical to ours.

  And every one of these tells a story.

  Every one of them is a mystery to science.

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