Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Billions of neutrinos pass unnoticed through your body every second.
6
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The average temperature at 40,000 feet above sea level is -60 F.
56