When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Sound at the right vibration can bore holes through a solid object.
134
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Most dust particles in your house come from dead skin.
48
Liquid TIDE laundry detergent glows under a blacklight.
96
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
For every gallon of sea water, you get more than a quarter pound of salt.
45
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13