Prime Minister Shinzo Abe deploys troops to erupting Mount Aso on island of Kyushu
World's longest known chain of continental volcanoes runs 2,000km and is 33 million years old.
Australian scientists find 52% of the world's sea turtles have ingested plastic debris.
Report from the University of Arizona warns that the situation will worsen.
Photographer Kerstin Langenberger captures image of injured starving polar bear on Norwegian archipelago.
Earth's surface temperature already looks set to break records for 2015.
Snakebites found to increase in both hot and cold phases of El Nino Southern Oscillation.
Study examines what would happen if we burned remaining fossil fuels on the planet.
The waters are retreating in Joso after washing houses away in scenes reminiscent of a tsunami.
The islands say they are fighting for their future.
Large parts of the country remains either on a warning or emergency warning for severe weather.
Thousands of refugees and migrants spent the night sleeping in the open in torrential rain.
Dramatic video footage shows families rescued by helicopter as floods hit eastern Japan.
National Geographic bought by 21st Century Fox for $725m
The Kinugawa River burst its banks after Tropical Storm Etau brought two months of rain in just 48 hours.
Amateur footage shows cars submerged after torrential rains hit town of Taormina.
National Geographic film puts a camera in the carcass of a wildebeest.
Analysis of cod provisions on board Mary Rose wreck came from North Sea, Iceland and Newfoundland.
Amateur footage shows vehicles tumbling down street in Adra, Almeria after torrential rains.
The unseasonal clouds of dust killed two people in Lebanon and injured hundreds more.
Huge sinkhole near Russian city of Solikamsk has tripled in width to 120m in last 10 months.
Study suggests global sea levels will rise by up to 44ft, not 98 as previously thought.
The 8-foot-long snake has been on the loose since 2 September.
Tafadzwa Gosho, was tending the rhino at the Imire Game Park, when the incident occured.
Obama met with Grylls during his Alaska trip to shoot a special edition of NBC's Running Wild.
Blue whale seen in Cornwall's Bay of Biscay by National Oceanography Centre.
Actor spoke out as activists chained themselves to puppet polar bear outside Shell HQ.
Five-month-old baby hippopotamus Devi explored San Diego Zoo's pool with her mother, Funani.
US President said steps must be taken to reduce carbon emissions as protesters greeted him.
The White House made the announcement on the eve of President Obama's trip to Alaska.