Iron weighs more after it rusts.
16
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Research indicates that plants grow healthier when they are stroked.
173
Most dust particles in your house are made from dead skin!
67
Aluminum used to be more valuable than gold!
84