Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Sound travels fifteen times faster through steel than through air.
134
Hot water can freeze faster than cold water.
181
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Diamonds can be shattered with a hammer.
-104
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21