The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Sound at the right vibration can bore holes through a solid object.
134
Pumice is the only rock that floats on water.
14
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
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
In zero gravity, a candle's flame is round and blue.
16
German chemists made a replica of a trophy the size of one molecule.
68