Pumice is the only rock that floats on water.
14
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
In zero gravity, a candle's flame is round and blue.
16
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199