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. TV footage showed bloodied runners and spectators being treated at the scene and the road strewn with debris. The FBI said that this was a "potential terrorist
An Australian beach is illuminated by an enticing neon blue glow as a rare phenomenon lights up the water .
FULL OF STUNNING colours and swirling shapes, the furrows on these fields create a mix of mesmerising patterns .
COURAGEOUS CLIMBERS scale frozen waterfalls in Canada, as the ice threatens to collapse beneath them .
This brave Hyena finally catches his pray among the thousands of flamingos, Lake Nakuru, Kenya - OUTNUMBERED among thousands of flamingos, this bold hyena is not put off from hunting for a morning snack .
GLIDING through the water, these delightful frogs show off their vibrant colours as they practice their FROG crawl .
SAT with his arms folded and a cross look on his face, this Gorilla looks like he's had enough of the Christmas holidays already .
HOPPING onto the scales, these adorable baby Humboldt penguins are ready for their first weigh-in .
MASKED intruders look sinister but really they are a gang of urban exploring pranksters .
A diver explores the crystal clear waters of the Silfra canyon in southern Iceland, which is the only place on Earth where you can dive or snorkel between two continental plates .
Sprawled out on top of a log, this sleeping leopard takes a relaxing break from his daily routine .
FORGET Thorpe Park this summer as this is a 50 mile-per-hour ride over the Colorado River CANYON .