4.5 pounds of sunlight strike the Earth each day.
27
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The only letter not appearing on the Periodic Table is the letter "J".
180
The bark of an older redwood tree is fireproof.
65
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One third of the electricity produced on earth is used to power electric light bulbs!
75