New evidence weakens case against climate in woolly mammoths’ death

Age of weaning suggests warming not responsible for megafauna extinction

mammoth tusks

YOUNG TUSKS  Juvenile Siberian woolly mammoth tusks (shown) reveal that, at the end of the Ice Age, the animals weaned young, suggesting that climate change wasn’t the main driver of extinction. 

Daryl Marshke, Michigan Photography

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DALLAS The story of woolly mammoths’ demise could be written in their tusks.