When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Nylon is made from coal and petroleum.
42
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Most dust particles in your house come from dead skin.
48
Scientists are working on a portable spray-on-skin that can heal severe wounds in just a few minutes.The spray mainly contains important proteins that can reprogram the injured cells to become stem cells, and back to young uniformed skin cells. So far they were able to accelerate healing process from 12 weeks to 21 days with a similar approach.
16
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
A ball of glass will bounce higher than a ball made of rubber.
73