Cold water weighs more than hot water.
93
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Sound at the right vibration can bore holes through a solid object.
134
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51