The smell of freshly cut grass is actually a plant distress call.
31
Your brain is 80% water.
525
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
A cesium atom in an atomic clock beats over nine billion times a second.
43
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