Indoor pollution is 10 times more toxic than outdoor pollution.
62
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Most dust particles in your house come from dead skin.
48
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65