On the verge of a catastrophe? Yellowstone National Park's caldera has erupted three times in the last 2.1 million years and scientists monitoring it say we could be in for another eruption. The super-volcano beneath Yellowstone National Park in Wyoming has been rising at a record rate since 2004. It would explode with a force a thousand times more powerful than the Mount St Helens eruption in... 

Joe Arridy, shown in a police mug shot, had an IQ of 46. Outgoing Colorado Gov. Bill Ritter has granted a posthumous pardon to Joe Arridy, a mentally disabled man who was executed for murder more than 70 years ago, despite evidence suggesting his innocence. “The tragic conviction of Mr. Arridy and his subsequent execution … merit such relief based on the great likelihood that Mr. Arridy...