Mauna Kea, Big Island, Hawaii, United States of America, North America

Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America

Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America

Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America

A car with snow chains, Cumbria, England, United Kingdom, Europe

Sheep desperate for food in the big January 2010 freeze, gnaw their way into sileage bales to find food in the Yorkshire Dales, near Settle, Yorkshire, England, United Kingdom, Europe

Derwent Water at Keswick in the Lake District completely frozen over during December 2010, Cumbria, England, United Kingdom, Europe

Glacier National Park

Glacier National Park

Polar Bear (Ursa maritimus) on sea ice off the sub-arctic coast of Hudson Bay, Churchill, Manitoba, Canada. Bears come to the coast of Hudson Bay in Fall waiting for the ice to freeze, and looking for a careless seal or dead whale to wash up. Global warming has shortened their winter so they are increasingly anxious as they wait for winter. While they wait, they engage in frequent wrestling matches to determine a mating hierarchy for the breeding season in March and April, and regularly check on the ice to see if it will carry them out to sea.

Floating chunk of ice before a huge glacier in Hornsund, Arctic, Svalbard, Norway, Europe