12 May 2017
Vol 356, Issue 6338

About The Cover

Cover image expansion

COVER Sunset at the Avenue of the Baobabs (Grandidier's baobab trees Adansonia grandidieri Baill.) near Morondava, western Madagascar. Highr-esolution satellite mapping reveals that the extent of forest cover in drylands such as this, where potential evapotranspiration substantially exceeds precipitation, is globally more than 40% higher than previously reported. See page 635.
Photo: Wolfgang Kaehler/LightRocket via Getty Images