Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The earth is approx. 6,588,000,000,000,000,000 tons.
175
According to studies, men change their minds two to three times more often than women.
72
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118