All about Aliens and Ufo's We believe in aliens

Space station flight engineer Andre Kuipers will be in a unique position to observe Earth Hour, a public awareness project that asks people to turn off their lights for one hour at an appointed day and time.

How Does an Asteroid Impact Make Diamonds? Russia says it's been keeping a huge haul of diamonds—created during an asteroid impact millions of years ago—secret since the 1970s. By Kathryn Doyle             Russia recently revealed a secret trove of "trillions of carats" of diamonds, .