Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Research indicates that plants grow healthier when they are stroked.
173
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44