The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The bark of an older redwood tree is fireproof.
65
According to studies, men change their minds two to three times more often than women.
72
One cubic foot of gold weighs more than 1,200 pounds!
78
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
In zero gravity, a candle's flame is round and blue.
16
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199