Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
One cubic foot of gold weighs more than 1,200 pounds!
78
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Nearly 50% of the world's scientists are assigned to military projects.
71