Sound travels about 4 times faster in water than in air.
408
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Nylon is made from coal and petroleum.
42
One barrel of petroleum holds 42 gallons.
20
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11