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
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
If the chemical sodium is dropped into water it will immediately and violently explode.
67
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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
Iron weighs more after it rusts.
68
Billions of neutrinos pass unnoticed through your body every second.
6