Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The sun is 330,330 times larger than the earth.
75
For every gallon of sea water, you get more than a quarter pound of salt.
45
Scientists aren't sure what color dinosaurs were.
312
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39