Each day, up to 150 species of life become extinct.
-23
Sound travels about 4 times faster in water than in air.
408
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Nearly 50% of the world's scientists are assigned to military projects.
71
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
According to studies, men change their minds two to three times more often than women.
72