A single speck of dust is half way in size between a subatomic particle and the Earth.
15
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists are now able to grow 'beating' heart tissue in a lab!
162
4.5 pounds of sunlight strike the Earth each day.
27
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88