When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
According to studies, men change their minds two to three times more often than women.
72
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Diamonds can be shattered with a hammer.
-104
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21