Donald M. Jones / Willow Ptarmigan (Lagopus lagopus) trio in fall, transitioning to winter plummage, central Alaska

Tom Gilks / Basic electric wiring linking homes in a slum with a diesel powered generator, Remba Island, Lake Victoria, Kenya.

Ben Hall / Black-headed gull (Larus ridibundus) alighting on water at dawn, Cheshire, UK, November. Highly Commended in the British Wildlife Photography Awards (BWPA) competition 2013.

Michael Pitts / Lake Assal shoreline - Africas lowest point at 515 feet below sea level, Djibouti, , March 2008

Juergen Freund / Aerial view of the flooded Lake Eyre National Park. South Australia, June 2011

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) in winter plumage on beach, Point Reyes National Seashore, California

Donald M. Jones / White-tailed Ptarmigan (Lagopus leucura) in winter plumage, browsing on Willow (Salix sp) buds, Alberta, Canada

Donald M. Jones / White-tailed Ptarmigan (Lagopus leucura) in winter plumage, Alberta, Canada

Ashley Cooper / Subsistence farming in the Annapurna Himalayas in Nepal. The terracing has been developed over centuries to farm this steep mountain land.

Ashley Cooper / Tuvaluan family having breakfast on Funafuti atol Tuvalu. March 2007

Ashley Cooper / Kestrel wind turbine in Scoraig, North West Scotland, UK. This whole community is off grid, powered by renewable energy. October 2013

Ashley Cooper / Green house powered by wind and solar power n remote off grid community. Scoraig, Scotland, October 2013.