When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Each day, up to 150 species of life become extinct.
-23
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
4.5 pounds of sunlight strike the Earth each day.
27
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13