If the chemical sodium is dropped into water it will immediately and violently explode.
67
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Most dust particles in your house are made from dead skin!
67
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Balsa wood is classified as a hard wood!
41
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79