The bark of an older redwood tree is fireproof.
65
Each day, up to 150 species of life become extinct.
-23
Nearly 50% of the world's scientists are assigned to military projects.
71
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Most dust particles in your house come from dead skin.
48
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The average home creates more pollution than does the average car.
33
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39