The mention of a koala bear often conjures up an image of an adorable spoon-nosed creature cocking its head to one side while clinging to a tree. Now, scientists have figured out why the iconic Australian marsupials hug trees: The trunks help the koala bears keep cool, according to a new study. "It can be a really useful way of getting rid of heat on a hot day," said study co-author Michael Kearney, an ecologist at the University of Melbourne in Australia.
http://tinyurl.com/obg299b
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