Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
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
Out of all the senses, smell is most closely linked to memory.
146
For every gallon of sea water, you get more than a quarter pound of salt.
45
Nylon is made from coal and petroleum.
42
One barrel of petroleum holds 42 gallons.
20
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
If the chemical sodium is dropped into water it will immediately and violently explode.
67