You can be notified when people open your email messages, even years later. It’s great for some purposes, but creepy for others.   
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The Man Who Put the Pee in Phosphorus. In a failed attempt to make gold, what he found turned out to be pretty valuable.
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Why Do We Put Candles on a Birthday Cake? The custom is older than you think.
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Pre-Meds Should Suffer Through Hunger Games. Competition to get into medical school is stressful, but medicine itself is stressful. 
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How a Mexican Dictator Introduced Chewing Gum to the US. He wasn’t the one who made the money, though.
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A seven-year-old writes a devastating breakup letter to her mom. They grow up so fast.
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What Transmen See that Women Don’t. The world treats you very differently when you’re a man.
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Modern Marriage Proposals. These are some of the pioneers of the creative and very public act of popping the question.