Right now, people in coastal China are fleeing successive typhoons. Parts of the Philippines are awash.

Typhoons are intense circular storms, which Australians know as tropical cyclones and Americans call hurricanes. Damage from cyclones has increased sevenfold since the 1980s, even as death tolls fell dramatically. In the 2010s, tropical cyclones did A$872 billion worth of damage globally.

NASA, CC BY

Why? Our world has more heat in the oceans and atmosphere, which can supercharge cyclones. A cyclone is a heat engine, transferring heat from warm ocean water up into colder layers of the atmosphere. More heat in the system means more intense heat engines.

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