Iron weighs more after it rusts.
68
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
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
Most dust particles in your house come from dead skin.
48
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Out of all the senses, smell is most closely linked to memory.
146