Iron weighs more after it rusts.
68
Nearly 50% of the world's scientists are assigned to military projects.
71
Scientists aren't sure what color dinosaurs were.
312
Scientists are now able to grow 'beating' heart tissue in a lab!
162
One 75-watt bulb gives more light than three 25-watt bulbs.
57
A cubic yard of air weighs about 2 pounds at sea level.
31
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17