Hot water can freeze faster than cold water.
181
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
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