David Woodfall / Dry saltmarsh pan with cracking after drought Bridgewater Bay NNR Severn Estuary Somerset, England, August 2009

Wild Wonders of Europe / Allofs / Drought patterns around the lagoon Etang du Fangassier, Camargue, France, May 2009

Wild Wonders of Europe / Allofs / Drought patterns in salt pan near Salin-de-Giraud, Camargue, France, May 2009

Niall Benvie / Cracked mud in drought, Cromarty, Scotland, UK

Philippe Clement / Eastern Grey fox (Urocyon cinereoargenteus) carcass and Cactus. Victim of extreme drought in the Sonoran Desert. Organ Pipe Cactus National Monument, Arizona, USA

Adrian Davies / Dried up river bed, Drought of 2006, Sussex, UK

Jack Dykinga / Panamint Valley's only remaining pool of water in it's dry lake bed, sunset light on Panamint Mountains, Death Valley National Park, California

Jabruson / Drying mud at drought-stricken waterhole, Tsavo East NP Kenya, Africa - height of dry season. Sequence 3/3

Pete Oxford / Cracked mud and dead camel thorn trees, Deadvlei, Namib-Naukluft NP, Namibia