Eric Baccega / African elephant (Loxodonta africana) herd with calves, walking in procession to a waterhole in sand storm, Etosha National Park, Namibia, Africa

Angelo Gandolfi / Scorched vegetation and rocks after fires during the peak of the dry season, Vale de Lua, Chapada dos Veadeiros National Park, Cerrado region, Goias, Brazil. Fires at the peak of the dry season, Septe...

Mitsuaki Iwago / Thorny Devil (Moloch horridus) walking across sand, Australia

Tony Heald / Animal skull on cracked earth, dry landscape. Namibia.

ZSSD / Colorado Desert Sidewinder (Crotalus cerastes laterorepens) on sand, venomous species native to deserts of California and Mexico

Jim Brandenburg / Gemsbok (Oryx gazella) running across sand dune, Namib Desert, Namibia

Jim Brandenburg / Landscape of sand dunes, Namib Desert, Namibia

Mark Moffett / Darkling Beetle (Onymacris unguicularis) collecting dew on its upturned body, Namib Desert, Namibia

Jim Brandenburg / Gemsbok (Oryx gazella) on sand dune, Namib Desert, Namibia

Jim Brandenburg / Gemsbok (Oryx gazella) trio running on sand dune, Namib Desert, Namibia

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field with Saguaro (Carnegiea gigantea) cactus, Organ Pipe Cactus National Monument, Arizona

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field with Saguaro (Carnegiea gigantea) cactus, Organ Pipe Cactus National Monument, Arizona