A cesium atom in an atomic clock beats over nine billion times a second.
43
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The smell of freshly cut grass is actually a plant distress call.
31
Nylon is made from coal and petroleum.
42
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39