Pumice is the only rock that floats on water.
14
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5