In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Scientists aren't sure what color dinosaurs were.
312
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
Iron weighs more after it rusts.
68
If the chemical sodium is dropped into water it will immediately and violently explode.
67