Jami Tarris / Caribou (Rangifer tarandus) entering teepee for food, Khovsgol, Mongolia

Gary Bell/ Oceanwide / Surfer, Solitary Islands Marine Park, New South Wales, Australia

David Woodfall / Hedge which has been 'netted ' to prevent breeding birds nesting, which would delay building development of new homes. The tree in the background has also been cut back. Chester, Cheshire, Eng...

Marie Read / Sandhill cranes (Grus canadensis) (Florida race), adult with two small chicks crossing highway, Kissimmee, Florida, USA, March.

Juergen Freund / Hand-reared Boongary (Dendrolagus lumholtzi) descending from a tree and climbing onto its carer's back, Atherton Tablelands, Queensland, Australia.

Yva Momatiuk & John Eastcott / Ice climbers atop Skaftafellsjokull Glacier, Skaftafell National Park, Iceland

Yva Momatiuk & John Eastcott / Ice climber scaling Skaftafellsjokull Glacier, Skaftafell National Park, Iceland

Yva Momatiuk & John Eastcott / Tourist next to cascades, Dynjandi Waterfall, Westfjords, Iceland

Jeff Foott / The Citadel Ruins, Cedar Mesa area, Bears Ears National Monument, Utah

Ingo Arndt / Aboriginal Rock Art / depicting human figure / Anbangbang Gallery / Nourlangie Range / Kakadu National Park, Northern Territory, Australia

Ingo Arndt / Mount Rushmore National Memorial, South Dakota, USA, September 2009

Ingo Arndt / Close up of underside / sole of human foot {Homo sapiens}