The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The force of a suction cup is calculated using F=AP.
15
Most dust particles in your house come from dead skin.
48
Iron weighs more after it rusts.
68
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199