The Earth's atmosphere weighs about 5.5 quadrillion tons.
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For every gallon of sea water, you get more than a quarter pound of salt.
45
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
Nylon is made from coal and petroleum.
42
Sound travels fifteen times faster through steel than through air.
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