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
Pumice is the only rock that floats on water.
14
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The force of a suction cup is calculated using F=AP.
15
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0