The bark of an older redwood tree is fireproof.
65
Nylon is made from coal and petroleum.
42
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Sound travels fifteen times faster through steel than through air.
134
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75