If the chemical sodium is dropped into water it will immediately and violently explode.
67
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
4.5 pounds of sunlight strike the Earth each day.
27
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The only letter not appearing on the Periodic Table is the letter "J".
180
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
One cubic foot of gold weighs more than 1,200 pounds!
78