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.

Fast-talking national-treasure math vlogger Vi Hart (previously) takes a statistical look at the polling data from the 2016 presidential election and concludes that the most significant divide in the country is "old vs young," which drives things like rural/urban (because young people leave failing rural areas for cities) and even racial divides.

Like many youtubers, the incomparable, fast-talking, sharpie-doodling mathematician Vi Hart (previously) was stunned by the Orlando shooting of Christina Grimmie, a Youtube singing star who broke out into the mainstream, and who was murdered by a man who attended her public appearance.

Fast-talking, doodling math genius Vi Hart (previously) really hates Pi Day, and every year, she celebrates her loathing with a fresh video pooping on your 3/14 parade.

Google has changed the commenting system on YouTube so that you need to be a Google Plus user to post; the new system uses algorithms to promote some comments above others, and has the perverse effect of making trolls more visible. — Read the rest

We've featured doodling, fast-talking YouTube mathematician Vi Hart a lot here, but her latest, a 30-minute extended mix, is absolutely remarkable, even by her high standards. For 30 glorious minutes, Ms Hart explores the nature of randomness and pattern, using Stravinsky's 12-tone music as a starting-point and rocketing through constellations, the nature of reality, Borges's library, and more. — Read the rest