Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Your brain is 80% water.
525
For every gallon of sea water, you get more than a quarter pound of salt.
45
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18