When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Each day, up to 150 species of life become extinct.
-23
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Nearly 50% of the world's scientists are assigned to military projects.
71
Aluminum used to be more valuable than gold!
84
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155