Fake news can sway elections, tank economies and sow discord in everyday life. Data scientist Sinan Aral demystifies how and why it spreads so quickly -- citing one of the largest studies on misinformation -- and identifies five strategies to help us unweave the tangled web between true and false. After the talk, Shoshana sits down with former White House Senior Adviser for the COVID-19 response, Andy Slavitt, to hear how we can spot public health misinformation.