Iron weighs more after it rusts.
68
Most dust particles in your house come from dead skin.
48
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20