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.
LIKE SUPERMAN carrying a slimy Lois Lane through the air this frog is treating its mate to a flying lesson .
In the calm waters of Greenland, gigantic icebergs dwarf everything around them .
An adorable orangutan named Pongo celebrates his first birthday at Zoo Atlanta, Georgia, America .
A diving guide leaves a shark completely docile and balanced in the palm of his hand .
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 .
A German photographer travelled around Africa where he met and photographed members of tribes in a series of intimate portraits .
An adorable little squirrel wakes from a nap and pops out his tongue for the camera .
Splashing around in the water, a mother otter and her son are tangled in a family feud .
At first glance what might look like ordinary rusty bridge and road railings, are in fact amazing works of art .
The aurora lights captured in Blair Nebraska, America - WITH electrifying purple and illuminous green brightening up the night sky, this is the rare moment a flash of 'sprite' lightening was captured on camera .
Like a scene from a fairytale, THOUSANDS of fireflies create an enchanting glow as they dance in a forest .
