Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The average temperature at 40,000 feet above sea level is -60 F.
56
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65