When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Nylon is made from coal and petroleum.
42
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116