A cubic yard of air weighs about 2 pounds at sea level.
31
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
One third of the electricity produced on earth is used to power electric light bulbs!
75
Diamonds can be shattered with a hammer.
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Hot water can freeze faster than cold water.
181
Brass doorknobs automatically disinfect themselves in about 8 hours.
18