Scientists aren't sure what color dinosaurs were.
312
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Most dust particles in your house come from dead skin.
48
Each day, up to 150 species of life become extinct.
-23
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Sound at the right vibration can bore holes through a solid object.
134
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199