PBS Newshour - 45x22 - January 30, 2020- Followmy.tv

Thursday on the NewsHour, senators continue asking questions in President Trump's impeachment trial as a pivotal vote on witnesses looms. Plus: Legal experts analyze the latest impeachment trial developments, a preview of the Iowa caucus, novel coronavirus is now a global health emergency, the economic power of peer pressure, Malcolm Gladwell on meeting strangers and Gwen Ifill forever remembered.