Scientists aren't sure what color dinosaurs were.
312
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Most dust particles in your house come from dead skin.
48
One ragweed plant can release as many as one billion grains of pollen!
51
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61