Pumice is the only rock that floats on water.
14
Sound travels fifteen times faster through steel than through air.
134
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
Scientists aren't sure what color dinosaurs were.
312
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21