Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Nylon is made from coal and petroleum.
42
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
One cubic foot of gold weighs more than 1,200 pounds!
78
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21