13 November 2020
Vol 370, Issue 6518

About The Cover

Cover image expansion

COVER Air-conditioning units hang off the back side of a row of buildings in Shenyang, Liaoning province, China. Many Chinese people spend sanfu, the hottest period of the year, in air-conditioned buildings. As the planet continues to warm, the need for innovative and environmentally friendly cooling technologies becomes more important. See page 776.
Photo: Visual China Group via Getty Images