Researchers find first direct evidence of a "glacial oxygen pump," which they say extended an essential lifeline to the simple life forms that inhabited the Earth at the time.
"There are many many reasons to be concerned…but a risk to the world's oxygen supply is not one of them," Allison Mills from Michigan Technological University told Newsweek.
How far would you go to keep a lie under wraps?
A witness told dispatchers the man had fallen to the ground and his wheelchair was on fire.
Eighty percent of all fish in Münster's Aasee lake have already died.
Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.