Coloured X-ray of a barn owl. A physicist has used X-ray to create an extraordinary collection of artwork. Arie van't Riets pictures reveal birds, fish, monkeys and flowers in an incredible new light. The 66-year-old, from Bathmen in the Netherlands, began X-raying flowers as a means to teach radiographers and physicians how the machine worked. But after adding a bit of colour to the pictures, the retired medical physicist realised the potential for an exciting new collection of art. (Photo by Arie van't Riet/Barcroft Media)

A Sri Lankan activist, who wrapped himself with fire crackers, walks in Colombo on July 23, 2014 to symbolically demonstrate against people burned during Anti-Tamil riots on the island thirty-one years ago. Official accounts placed the death toll at 400 while human rights activists put the toll at thousands. (Photo by Ishara S.Kodikara/AFP Photo)

These unique photos capture the moment a boy has his teeth picked clean by amazing underwater shrimp. These fascinating creatures spend their lives diving inside the mouths of fish to remove the parasites that lurk there. Russell Laman imitated the behaviour of the surrounding fish swarm to entice the cleaner shrimp into his mouth whilst snorkelling with his father Tim Laman in Bali, Indonesia. The 13-year-old queued with the waiting fish and then opened his mouth when the shrimps came near. (Photo by Tim Laman/Caters News)

A group of surfers ride the Bore Tide at Turnagain Arm on July 15, 2014 in Anchorage, Alaska. Alaskas most famous Bore Tide, occurs in a spot on the outside of Anchorage in the lower arm of the Cook Inlet, Turnagain Arm, where wave heights can reach 6-10 feet tall, move at 10-15 mph and the water temperature stays around 40 degrees farenheit. This years Supermoon substantially increased the size of the normal wave and made it a destination for surfers. (Photo by Streeter Lecka/Getty Images)

This picture taken on September 3, 2014 shows a man taking pictures of floodwater released from the Three Gorges Dam, a gigantic hydropower project on the Yangtze river, in Yichang, central China's Hubei province, after heavy downpours in the upper reaches of the dam caused the highest flood peak of the year. Eleven people died and 27 others are missing after torrential rains battered southwest China's Chongqing, a municipality in the upper reaches of the Three Gorges Dam, causing thousands of houses to collapse, state media said. (Photo by AFP Photo/Stringer)

Star trails form over the Memorial House of the Bulgarian Communist Party on mount Buzludzha in this long exposure picture taken on September 12, 2014. The monument was officially opened in 1981 by the Bulgarian Communist regime to mark 100 years of the set up of an organised Socialist movement, a predecessor of the Bulgarian Communist Party. The monument, no longer maintained by the Bulgarian government after the fall of the Communist regime in 1989, is now abandoned and vandalized. (Photo by Stoyan Nenov/Reuters)

Workers carry baskets of hand-picked tea leaves at the Makaibari Tea Estate in Kurseong, West Bengal, India, on Monday, September 8, 2014. The 155-year-old Makaibari Tea Estate recently sold it's Darjeeling tea, named Silver Tips Imperial, for $1,850 a kilo to buyers from the U.K., the U.S. and Japan, becoming the most expensive Indian tea ever sold. (Photo by Sanjit Das/Bloomberg)

Documenting the effects of climate change first hand over the past eight years, Camille Seaman fears we may be on the road to the last iceberg. Photographing the enormous frozen floats at both poles for the past eight years, the Californian adventurer has seen the receding ice shelves and experienced the changing warmer weather. Feeling that her intimate and emotional work documents a snapshot of history, Camille presents her series “The Last Iceberg” as a study of what she sees as the personality of each huge iceberg. Drawing parallels with the famous novel, “The Last of the Mohicans”, Camille, 42, wonders whether these unique, almost alien natural features will become a thing of the past or part of nature's renewal process. (Photo by Camille Seaman/Barcroft Media)