One cubic foot of gold weighs more than 1,200 pounds!
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
A 'jiffy' is an actual unit of time for 1/100th of a second!
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Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Most liquid laundry detergents are alive with living organisms that help to break down stains!
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Billions of neutrinos pass unnoticed through your body every second.
6
The average temperature at 40,000 feet above sea level is -60 F.
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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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