The White House has declared a state of emergency in Kentucky after a rare, late-season tornado outbreak that cut a swath of destruction 250 miles (400 kilometers) across Arkansas, Kentucky, Missouri and Tennessee, and confirmed to have killed at least 76 people. Tornadoes associated with the same weather system, referredread more

A new study shows that the increasing melt of the polar ice sheets is causing the planet’s crust to warp, as the weight of the ice is lessened; causing an upward rebound of the bedrock in the affected regions, and horizontal movement of the landscape. Although the decrease in iceread more

For the first time in recorded history rain has fallen at Greenland’s Summit Camp, lasting several hours, this event melted more than a third of a million square miles of ice in one day. At 5:00 AM local time on August 14, the temperature at Summit Camp, at an elevation ofread more