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16 July 2010

Mammoth hunters changed climate

Ancient hunters who stalked the world's last woolly mammoths may have warmed the Earth's far northern latitudes thousands of years before humans began burning fossil fuels.

Ancient hunters who stalked the world's last woolly mammoths likely helped warm the Earth's far northern latitudes thousands of years before humans began burning fossil fuels, according to a study of prehistoric climate change.
 

The end of the last Ice Age, marked by a worldwide rise in temperatures and the dramatic retreat of glaciers that once covered much of the Northern Hemisphere, was already under way when the extinction of woolly mammoths began.
 

 
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