Indoor pollution is 10 times more toxic than outdoor pollution.
62
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Hot water can freeze faster than cold water.
181
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Research indicates that plants grow healthier when they are stroked.
173