One barrel of petroleum holds 42 gallons.
20
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The bark of an older redwood tree is fireproof.
65
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
One third of the electricity produced on earth is used to power electric light bulbs!
75