Mark Carwardine / Pod of Short-finned pilot whales (Globicephala macrorhynchus) at surface, Sea of Cortez, Baja California, Mexico

Shattil & Rozinski / Lady in the night orchid {Brassavola nodosa} Belize, Central America

Juergen Freund / Palm trees at Mulege oasis, Baja California, Mexico

Juergen Freund / Cirio tree and half moon, Catavina desert, Baja California, Mexico

John Cancalosi / Vehicles collecting salt for export, Baja California, Mexico

John Cancalosi / Copper smelter industry, sending pollution up into air, Sonora Desert, Mexico, Central America

DAVID TIPLING / Lowland rainforest landscape at dawn, Soberiana NP, Panama

DAVID TIPLING / Sun rising behind a mist filled lowland rainforest valley, Soberiana NP, Panama.

DAVID TIPLING / The volcanic crater of El Valle, Panama

DAVID TIPLING / Lowland rainforest landscape at dawn, Soberiana NP, Panama.

DAVID TIPLING / The volcanic crater of El Valle, Panama.

DAVID TIPLING / Elfin cloud forest, El Valle, Panama.