Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The only letter not appearing on the Periodic Table is the letter "J".
180
A 'jiffy' is an actual unit of time for 1/100th of a second!
66