Brass doorknobs automatically disinfect themselves in about 8 hours.
18
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
Optical illusions occur when what the eyes see conflicts with what the brain expects.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
In zero gravity, a candle's flame is round and blue.
16
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One ragweed plant can release as many as one billion grains of pollen!
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