Iron weighs more after it rusts.
68
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
One cubic foot of gold weighs more than 1,200 pounds!
78
Liquid TIDE laundry detergent glows under a blacklight.
96
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199