One 75-watt bulb gives more light than three 25-watt bulbs.
57
Pumice is the only rock that floats on water.
14
4.5 pounds of sunlight strike the Earth each day.
27
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
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
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89