Scientists determine why koalas cling to tree limbs

Scientists have finally figured out why koalas hug trees when it gets hot.

A team of Australian and American researchers found that as temperatures rise, koalas tend to put more of their bodies in contact with the trees they inhabit.

The science behind this involves something called "conductive heat transfer," where the koala transfers its body heat to the tree. The tree stays cool by sucking up water from the soil.