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A little wonder, every day

Koalas Press Against Cooler Trees

Титульна AI-згенерована ілюстрація / AI-generated cover illustration. A koala hugging a eucalyptus trunk in a sunlit Australian forest.
A koala hugging a tree in an upright resting posture.
A koala touching a eucalyptus trunk that is visually contrasted with warm surrounding air.
A koala resting against a large branch in a warm Australian woodland.
A conceptual close view of heat transfer by contact between koala fur and tree bark.
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Титульна AI-згенерована ілюстрація / AI-generated cover illustration. A koala hugging a eucalyptus trunk in a sunlit Australian forest.

Listen to fact0:00 / —

In hot weather, a koala may press against a trunk or large branch. In a field study, koalas sat on tree trunks more often in hot conditions, and the measured trunks were cooler than the air. Contact with a cooler surface helps carry away some heat by conduction and may reduce the need for evaporative cooling; it is one strategy, not complete protection from overheating.