Heatwaves among climate 'mysteries' still puzzling scientists, despite progress

Researchers found that it is not the increase in average summer temperature that boosted death rates, but heatwaves: how long they last, night-time temperatures and humidity levels. — AFP Relaxnews

Paris (AFP): What worries one of the world's leading climate scientists the most?

Heatwaves -- and particularly the tendency of current models to underestimate the intensity of these bursts of deadly, searing temperature.