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A dermatologist investigates

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YpK7x TIL that Dominica and Nicaragua are the only two nations in the world to have the color purple included in their national flags.
p8vJp TIL The inventor of the PSA test, taken by over 30 million American men yearly to detect prostate cancer, called it a "profit-driven public health disaster". He also stated that the test is "hardly more effective than a coin toss".
x65Kw TIL Georgy Zhukov, Marshal of the Soviet Union, was an avid fisherman in his retirement. When President Eisenhower, who considered him the most instrumental Allied leader in Hitler's defeat, learned this he had him sent a set of fishing tackle. Zhukov used it exclusively, for the rest of his life.
JY9k1 TIL Sherpa people have a small number of names and children are often called by days of the week. They also give names according to certain virtues. By mistake of the enumerators in Nepal, their nationality was added as a surname. Otherwise, they have no last name.
ov98 TIL that Netflix accounts for 32.7% of Internet traffic in the US