When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Hot water can freeze faster than cold water.
181
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
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Pure water (H2O) does not conduct electricity on its own.
46
Most dust particles in your house come from dead skin.
48
The sun is 330,330 times larger than the earth.
75