If the chemical sodium is dropped into water it will immediately and violently explode.
67
One third of the electricity produced on earth is used to power electric light bulbs!
75
Most dust particles in your house come from dead skin.
48
4.5 pounds of sunlight strike the Earth each day.
27
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Diamonds can be shattered with a hammer.
-104
The average home creates more pollution than does the average car.
33
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15