One third of the electricity produced on earth is used to power electric light bulbs!
75
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
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Diamonds can be shattered with a hammer.
-104
Cold water weighs more than hot water.
93