A pair of adorable polar bear cubs play-fight with each other in the Alaskan snow. Pictured on the coast of Kaktovik on Barter Island, the young polar bears roll around in the powdery snow as they tickle and wrestle together. Finishing their play-date, one of the cheeky bears teasingly sticks out its tongue before bounding towards their mother.
HOPPING onto the scales, these adorable baby Humboldt penguins are ready for their first weigh-in .
THIS is the EXPLOSIVE moment when a 50 metre high pylon came crashing down to earth in a rural field .
A fox takes a tumble and lands on his head when he tries to fend off a pair of eagles in Japan .
FROM the rolling hills of the Scottish highlands to looming chalk cliffs in Sussex, these stunning photographs capture the spectacular beauty of Great Britain .
THIS BIGFOOT 'Jesus bird' may look silly, but he's perfectly designed for walking on water .
BALANCING 30 metres above ground, these slackliners take the expression of living dangerously one step further, by tightrope walking NAKED .
FROM COLOURFUL autumn leaves to living trees at first glance you might miss these people blended with nature .
USUALLY full to bursting, these London Underground stations stand silent and completely commuter free .
A cricket perches on an unusual seat after crawling up the snout of a crocodile .
A northern potoo shows it is a master of disguise as it perches on a tree stump and blends into the bark .
RACING through the mountain range on horseback, the Kazakh people practice their ancient tradition of hunting with golden eagles .
SWIMMING next to 40 tonne whales, dare-devil divers take the plunge with these gentle giants of the sea .