A cubic yard of air weighs about 2 pounds at sea level.
31
Sound travels fifteen times faster through steel than through air.
134
Most dust particles in your house come from dead skin.
48
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Nylon is made from coal and petroleum.
42