Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Out of all the senses, smell is most closely linked to memory.
146
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
For every gallon of sea water, you get more than a quarter pound of salt.
45
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Pure water (H2O) does not conduct electricity on its own.
46
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310