Pumice is the only rock that floats on water.
14
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The only letter not appearing on the Periodic Table is the letter "J".
180
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
No matter how cold it gets, gasoline will not freeze.
107
One cubic foot of gold weighs more than 1,200 pounds!
78
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18