Back of the Envelope [Physics] Problems...

Winning stories from this week's CRMA Awards, feat. @JustinHeckert @pamelacolloff, Skip Hollandsworth and @tebartl

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In Holland the children receive presents on December 5, in celebration of Saint Nicholas Day. It sounded sort of quaint until I spoke to a man named Oscar, who filled me in on a few of the details as we walked from my hotel to the Amsterdam train station. ... The words silly and unrealistic were redefined when I learned that Saint Nicholas travels with what was consistently described as "six to eight black men." I asked several Dutch people to narrow it down, but none of them could give me an exact number. It was always "six to eight," which seems strange, seeing as they've had hundreds of years to get a decent count.

Early on Aug. 29, 2010, Ismael Bojórquez, editor of the newsweekly Riodoce, in the Mexican city of Culiacán, learned that a man in his 20s had been found dead of bullet wounds in a white Lamborghini. Murders of young men are common in Culiacán, the capital of the state of Sinaloa and the seat of power of the cartel of the same name, but this one was different. The victim, Bojórquez heard, was the son of Joaquin “El Chapo” Guzmán, the head of the Sinaloa cartel and the most powerful drug kingpin in Mexico. Two and a half years earlier, when another of El Chapo’s sons was gunned down by the rival Beltrán Leyva cartel, it ignited a bloody war—387 people were killed in Culiacán in three months. In a way, El Chapo (Spanish for “Shorty”; Guzmán is 5’6”) and his empire are the main subjects of Riodoce, one of the only periodicals in Mexico that seriously investigates drug violence.

By that summer, Lee’s alleged fraud had become one of Korea’s top news items. Death threats streamed in, and Lee found himself accosted by angry people on the street. Since his face was so recognizable, he became a virtual prisoner in his Seoul apartment. In a matter of weeks, he went from being one of the most beloved figures in the country to one of the most reviled. But in fact Lee had not lied about his academic record. He actually did graduate from Stanford in three and a half years with two degrees. His GPA had been in the top 15 percent of his undergraduate class. The evidence marshaled against him was false. It was an online witch hunt, and last spring I set out to discover why it happened. See also: The Persecution of Daniel Lee

Neil deGrasse Tyson AMA #2