Iron weighs more after it rusts.
68
Nearly 50% of the world's scientists are assigned to military projects.
71
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Aluminum used to be more valuable than gold!
84
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Research indicates that plants grow healthier when they are stroked.
173