Our Recovering Ozone Layer Shows Politics Can Make A Difference

Finally, some good news about our troubled atmosphere: A UN study shows that the ozone layer is displaying early signs of thickening after years of depletion. It's on the road to recovery — an achievement that scientists say is due to political will. » 9/11/14 3:30pm 9/11/14 3:30pm

Ultra-powerful, super short cosmic explosions could ravage life on Earth

In the ultimate cosmic cataclysm, two ultra-dense bodies collide. For less than a second, incredible amounts of super-charged particles explode forth. These blasts could wipe out most life on Earth...and it's probably happened dozens of times already. » 10/09/11 12:45pm 10/09/11 12:45pm

Arctic ozone levels dropped by as much as half in the past year

Check out the stark difference between these two satellite images, taken on March 19, 2010 and March 19, 2011. The left image shows much more ozone (in red) over the Arctic than the right image. What's happened? » 3/31/11 9:30am 3/31/11 9:30am