The bark of an older redwood tree is fireproof.
65
According to studies, men change their minds two to three times more often than women.
72
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
4.5 pounds of sunlight strike the Earth each day.
27
The storage capacity of human brain exceeds 4 Terrabytes.
140
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199