One ragweed plant can release as many as one billion grains of pollen!
51
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Iron weighs more after it rusts.
68
4.5 pounds of sunlight strike the Earth each day.
27
One third of the electricity produced on earth is used to power electric light bulbs!
75
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11