Aluminum used to be more valuable than gold!
84
Nearly 50% of the world's scientists are assigned to military projects.
71
Iron weighs more after it rusts.
68
Nylon is made from coal and petroleum.
42
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Out of all the senses, smell is most closely linked to memory.
146
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304