Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists in Germany have developed a candy that doesn't cause cavities.
11
One third of the electricity produced on earth is used to power electric light bulbs!
75
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
The smell of freshly cut grass is actually a plant distress call.
31