Benjamin Barthelemy / Thawing alpine lake, Vanoise National Park, Rhne-Alpes, France, June.

Andy Rouse,Andy Rouse / Waterfall from ice cliffs and polar ice cap. Austfonna Polar Ice Cap, Svalbard, Arctic. August 2011. Highly commended in the GDT competition 2013

Doug Wechsler / Vinegar flies / Fruit flies (Drosophila sp.) feeding on fermented sap or alcohol flux, Fort Washington State Park, Montgomery County, Pennsylvania, USA, June.

Christophe Courteau / Thawing sea ice in Woodfjord, Svalbard, Norway, June, 2012.

Andy Sands / Meadow pipit (Anthus pratensis) in snow, Hertfordshire, England, UK, January.

PREMAPHOTOS / Black slugs mating {Arion ater} red form, England. Hermaphrodite

Bristol City Museum / Peppered moth {Biston betularia} specimens: melanic dark form is better camouflaged in urban areas and has been dominant in UK but as air quality has improved over past decades, the lighter form is ma...

Jeff Turner / White arctic form of wild Grey wolf (Canis lupus) adult female with two pups, Ellesmere Island, Canada

Jeff Turner / White arctic form of wild Grey wolf (Canis lupus) adult female, Ellesmere Island, Canada

Jeff Turner / White arctic form of wild Grey wolf (Canis lupus) adult female, Ellesmere Island, Canada

Doug Allan / Inuk man placing stones on top of sealskin bag filled with Little auks (Alle alle) during preparation of kiviak, Siorapaluk, Greenland.

Doug Allan / Inuk man placing stones on top of sealskin bag filled with Little auks (Alle alle) during preparation of kiviak, Siorapaluk, Greenland.