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Matthew Broderick in the 1983 teen-hacker movie, WarGames. (Warner Bros. Home Entertainment) There is this part of your brain called your prefrontal cortex that apparently does not fully develop until you are in your 20’s. This area is responsible for … Read more

For over 20 years, I’ve been telling the same story to students whenever I teach European history. At some point in the 14th century, the bacterium Yersinia pestis somehow moved out of the rodent population in western China and became … Read more