Iron weighs more after it rusts.
16
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The smell of freshly cut grass is actually a plant distress call.
31
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Liquid TIDE laundry detergent glows under a blacklight.
96
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
A cubic yard of air weighs about 2 pounds at sea level.
31