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
In zero gravity, a candle's flame is round and blue.
16
Your brain is 80% water.
525
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Sound travels fifteen times faster through steel than through air.
134

