There's a Catch 22 when it comes to mining the rare earth minerals essential to much "green" energy. What exactly is so dirty about wind turbines?
Sure, a report that confirms Area 51 has been unclassified - but is there any truth to those little green men rumors?
Are you as nerdy about National Treasure as I am? i09 put together a list of the most astonishing real-life treasure hunts.