One barrel of petroleum holds 42 gallons.
20
Sound at the right vibration can bore holes through a solid object.
134
Each day, up to 150 species of life become extinct.
-23
A cesium atom in an atomic clock beats over nine billion times a second.
43
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One third of the electricity produced on earth is used to power electric light bulbs!
75
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
