Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Iron weighs more after it rusts.
68
Out of all the senses, smell is most closely linked to memory.
146
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7