When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Out of all the senses, smell is most closely linked to memory.
146
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Nylon is made from coal and petroleum.
42
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9