Mammoths, sabre-tooth tigers, giant sloths and other ‘megafauna’ died out across most of the world at the end of the last Ice Age because the changing climate became too wet, according to a new study. By studying the bones of the long-dead animals, researchers were able to work out levels of water in the environment. And they found a link between the time large grassland animals and their predators became extinct in different parts of the world over a period of 15,000 to 11,000 years ago and a sudden increase in moisture.

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