This week, hosts Mark Masselli and Margaret Flinter welcome engineer, data analyst and Silicon Valley entrepreneur Tomas Pueyo, whose recent collection of articles in the online publication Medium outline what must be done to contain COVID-19, and minimize the harm to health and economies. He analyzes global data on actions taken by countries and their impact on outcomes, recommending that widespread testing, contract tracing, physical distancing, hand hygiene and widespread use of masks will help contain the pandemic.