There's a café in France which charges €7 for a coffee to rude customers and €1.40 to people who talk politely to staff.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
Self-made millionaire Harris Rosen adopted a Florida neighborhood called Tangelo Park, cut the crime rate in half, and increased the high school graduation rate from 25% to 100% by giving everyone free daycare and all high school graduates scholarships.
20