How a subreddit of amateur day traders punked Wall Street by pumping up GameStop; a teacher shares how she manages 18 elementary students on a daily, four-hour video call; how the pandemic turned Groundhog Day from a classic comedy into a horror movie with life lessons; fixing long-term care in Canada; magic marks 100 years of sawing women in half; why Gandhi's assassin is now more popular than ever in India and more.