Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
One barrel of petroleum holds 42 gallons.
20
In zero gravity, a candle's flame is round and blue.
16
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
The smell of freshly cut grass is actually a plant distress call.
31