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
THIS is the awesome moment an Osprey catches its prey travelling at 50mph, giving new meaning to FAST FOOD .
BLOWING bubbles underwater, this adorable polar bear slides into his tank for a playful dip .
PICKING up a tiny tea-pot with its paws, a little red squirrel struggles to prepare its morning tea .
POPE MOBBED BY THOUSANDS OF WORSHIPPERS IN RIO - Thousands of worshippers gather to celebrate the Papal visit on Copacabana beach, Rio de Janeiro ,Brazil .
BALANCING 30 metres above ground, these slackliners take the expression of living dangerously one step further, by tightrope walking NAKED .
CONTRASTING settings reveal some of England’s most beautiful landscapes in all their glory .
FLYING through the air, these delighted pooches pull their best poses mid-flight .
A blanket of fog is lit up by the colourful glowing lights of the city below .
WITH the mystical clouds forming a thick blanket and the electrifying lights below, these stunning pictures provide a unique view of the cityscape of Dubai taken from the tallest building in the world .
SQUEEZING their furry faces through a hole in a tree, a trio of curious baby squirrels leave their nest for the first time to explore their surroundings .
A middle spotted woodpecker swoops into her nest and feeds her young in a forest in Trentino, Italy .
A curious red squirrel takes a break from collecting nuts and tries her hand at photography .