Drought in Europe, dwindling Arctic sea ice, a slow start to the Indian monsoon – unusually hot ocean temperatures can disrupt climate patterns around the world, as an ocean scientist explains.

Currents can carry that deep ocean heat hundreds of miles to surface again at distant shores.

A new report lays out steps communities can take to help their residents survive heat waves as the risk of dangerous temperatures rises.

Tackling poverty can protect people from rising heat extremes in Britain and abroad.

The official forecast calls for a strong El Niño by winter, but other models suggest it might dip in and out. An atmospheric scientist explains.

Heatwaves are often the result of these bursts of warm, southerly air.

High temperatures are also a cause of illness and death for migrants.

Hot days are getting hotter in north-west Europe – and the region is poorly equipped to cope.

Spring 2022’s record heat put most Indians at greater risk of a premature death.

Afghanistan and Central America have growing populations, limited resources, and the potential for more extreme heatwaves.