Bardarbunga volcano burps and burps, putting Iceland on alert Lava fountains at Iceland volcano briefly puts aviation alert at red, the highest level. Level then reduced as amounts of ash produced said not a danger. by Jim Algar
Science All eyes on Holuhraun lava field as Iceland volcanic eruption threatens to disrupt air travel by James Maynard
Science Antarctic sea levels rise too fast as ice melts, freshwater increases in oceans by Rebecca Kaplan
Science Yellowstone supervolcano eruption will be nightmarish but not catastrophic: Study by Quinten Plummer
Science Forget Bardarbunga: Papua New Guinea Mount Tavurvur volcano giving airlines industry more headache by James Maynard
Science Last passenger pigeon Martha died 100 years ago on Sept 1: Time to resurrect it? by James Maynard
Science PNG rocked by volcanic eruption, dividing world's attention between Iceland and the Pacific by Jim Algar
Science Yellowstone super-eruption: Would you be safe? Not if you live anywhere in North America by Jim Algar
Science Bardarbunga volcano eruption lowered to orange alert, air traffic disruption ruled out by James Maynard
Science Ancient Arctic Eskimos suddenly vanished, DNA study brings them back to life by Rebecca Kaplan
Science Illinois protects its mountain lions, bears and wolves from being hunted and killed by Jim Algar
Science The origin of honeybees, adaptation to climate change, revealed from genome by Rebecca Kaplan
Defense Chinese supersonic submarine with speed up to 3600 mph a step closer to reality by Lori Sandoval