Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
In zero gravity, a candle's flame is round and blue.
16
Sound at the right vibration can bore holes through a solid object.
134
Liquid TIDE laundry detergent glows under a blacklight.
96
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15