Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
A cubic yard of air weighs about 2 pounds at sea level.
31
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
No matter how cold it gets, gasoline will not freeze.
107
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118