Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
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
Most dust particles in your house come from dead skin.
48
According to studies, men change their minds two to three times more often than women.
72
Billions of neutrinos pass unnoticed through your body every second.
6
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65