The average temperature at 40,000 feet above sea level is -60 F.
56
Hot water can freeze faster than cold water.
181
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
The bark of an older redwood tree is fireproof.
65
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Sound at the right vibration can bore holes through a solid object.
134