Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
One cubic foot of gold weighs more than 1,200 pounds!
78
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The bark of an older redwood tree is fireproof.
65