Your brain is 80% water.
525
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
In zero gravity, a candle's flame is round and blue.
16
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The force of a suction cup is calculated using F=AP.
15
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
One third of the electricity produced on earth is used to power electric light bulbs!
75
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6