When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Diamonds can be shattered with a hammer.
-104
Iron weighs more after it rusts.
68
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
A cubic yard of air weighs about 2 pounds at sea level.
31