Adult brown skuas, working together to steal a penguin egg near the Antarctic peninsula in the Southern Ocean, Antarctica, Polar Regions

Sunbeams through storm clouds over sailboat

Rattlesnake coiled under rock

Salar de Arizaro, one of the largest salt flats in the world. The Altiplano near village Tolar Grande in Argentina close to the border to Chile. South America, Argentina

Salar de Arizaro, one of the largest salt flats in the world. The Altiplano near village Tolar Grande in Argentina close to the border to Chile. South America, Argentina

Fishermen in the Uummannaq Fjord System, north west Greenland. The fjords are frozen during winter, the fishermen use motor or dog sleds to drive to holes in the ice to lower up to 1000m long lines with bait. North America, Greenland

Salar de Arizaro, one of the largest salt flats in the world. The Altiplano near village Tolar Grande in Argentina close to the border to Chile. South America, Argentina

Desierto del Diablo. The Argentinian Altiplano along the Routa 27 between Pocitos and Tolar Grande. South America, Argentina

The salt flats Salar de Pocitos in the Argentinian Altiplano. Routa 27 and the railway Salta - Antofagasta is crossing the salt flats. South America, Argentina

The salt flats Salar de Pocitos in the Argentinian Altiplano. South America, Argentina

Salar de Arizaro, one of the largest salt flats in the world. The Altiplano near village Tolar Grande in Argentina close to the border to Chile. South America, Argentina

Desierto del Diablo. The Argentinian Altiplano along the Routa 27 between Pocitos and Tolar Grande. South America, Argentina

Surface of the Salar predominantly natriumchloride. Landscape on the salt flats Salar Salinas Grandes in the Altiplano. South America, Argentina

Desierto del Diablo. The Argentinian Altiplano along the Routa 27 between Pocitos and Tolar Grande. South America, Argentina

Fishermen in the Uummannaq Fjord System, north west Greenland. The fjords are frozen during winter, the fishermen use motor or dog sleds to drive to holes in the ice to lower up to 1000m long lines with bait. North America, Greenland

Fishermen in the Uummannaq Fjord System, north west Greenland. The fjords are frozen during winter, the fishermen use motor or dog sleds to drive to holes in the ice to lower up to 1000m long lines with bait. North America, Greenland

Salar de Arizaro, one of the largest salt flats in the world. The Altiplano near village Tolar Grande in Argentina close to the border to Chile. South America, Argentina

Line with bait. Fishermen in the Uummannaq Fjord System, north west Greenland. The fjords are frozen during winter, the fishermen use motor or dog sleds to drive to holes in the ice to lower up to 1000m long lines with bait. North America, Greenland

Fishermen in the Uummannaq Fjord System, north west Greenland. The fjords are frozen during winter, the fishermen use motor or dog sleds to drive to holes in the ice to lower up to 1000m long lines with bait. North America, Greenland

Fishermen in the Uummannaq Fjord System, north west Greenland. The fjords are frozen during winter, the fishermen use motor or dog sleds to drive to holes in the ice to lower up to 1000m long lines with bait. North America, Greenland

Katy Holm sorts gear at the base Cerro Pollone in Argentine Patagonia. January 2005