Most dust particles in your house come from dead skin.
48
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Out of all the senses, smell is most closely linked to memory.
146
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Pumice is the only rock that floats on water.
14
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The only letter not appearing on the Periodic Table is the letter "J".
180