Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
In zero gravity, a candle's flame is round and blue.
16
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
The storage capacity of human brain exceeds 4 Terrabytes.
140
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
4.5 pounds of sunlight strike the Earth each day.
27
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17