Tree huggers are cool:

  • A new study by a team of Australian and U.S. researchers found that koalas seek out and hug trees to keep themselves from overheating
  • During hot weather, the koalas “appeared to be hugging the trunks or large lower branches” of trees, which can be five degrees cooler than the air, the researchers reported in the paper

More here: Koalas Cool Off By Clinging to Trees

Alternatively, flag down a passing cyclist:

Koala cyclist