A cubic yard of air weighs about 2 pounds at sea level.
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The average temperature at 40,000 feet above sea level is -60 F.
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For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
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Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
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4.5 pounds of sunlight strike the Earth each day.
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All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
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Sound travels about 4 times faster in water than in air.
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A 'jiffy' is an actual unit of time for 1/100th of a second!
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