Research indicates that plants grow healthier when they are stroked.
173
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
In zero gravity, a candle's flame is round and blue.
16
The bark of an older redwood tree is fireproof.
65
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A cubic yard of air weighs about 2 pounds at sea level.
31
Diamonds can be shattered with a hammer.
-104
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17