4.5 pounds of sunlight strike the Earth each day.
27
The earth is approx. 6,588,000,000,000,000,000 tons.
175
A cubic yard of air weighs about 2 pounds at sea level.
31
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
German chemists made a replica of a trophy the size of one molecule.
68