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.
COURAGEOUS CLIMBERS scale frozen waterfalls in Canada, as the ice threatens to collapse beneath them .
A SPECTRUM of colours fills the sky during this spectacular and natural display of light .
LIFTING their heads high and bumping beaks, these aggressive pelicans clash over fish .
Dogs catch waves at the Coronado Bay dog surf championships Saturday 22nd June 2013- DOG SURFING mutts have never looked so gnarly .
LYING flat out on his back, this little meerkat makes the most of the English sunshine .
A baby sperm whale assumed the role of a friendly giant when faced with two awestruck divers .
These are the faces of orphans suffering from the horrifying effects of chemical warfare .
STARING intently into the camera, a polar bear appears to be lost in thought while relaxing in the snow .
At least three people have been killed and more than 100 injured, some seriously, in two explosions at the finish line of the Boston Marathon .
