When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The bark of an older redwood tree is fireproof.
65
Hot water can freeze faster than cold water.
181
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A 'jiffy' is an actual unit of time for 1/100th of a second!
66