Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The smell of freshly cut grass is actually a plant distress call.
31
No matter how cold it gets, gasoline will not freeze.
107
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
One third of the electricity produced on earth is used to power electric light bulbs!
75
Most dust particles in your house come from dead skin.
48
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17