As usual, Vi Hart's annual Pi Day video is the best way to ring in 3/14

Vi Hart (previously) is the fast-talking, doodling, hyper-charming mathematical vlogger whose Pi Day videos are consistently the best of the season, even when she's pooping on Pi, she always manages to fascinate and delight. Read the rest

The crazy shapes of 17th-century pies

Why were pies in the 1600s baked in such improbable shapes? Over at HiLobrow, Tom Nealon investigates, and Deb Chachra drops some science on the question.

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