80 million people. That's one percent of the world's total population. It's also the number of displaced people in the world today and the highest number since World War II. And it's a crisis that's been raging long before the COVID-19 pandemic took hold. How did we get here and what we can do about it? The UN's top advocate for refugees, High Commissioner for Refugees Filippo Grandi, has some answers. In fact, his passion for helping the world's most vulnerable has come at a cost. He recently tested positive for COVID-19 himself.

Watch the episode: UNHCR chief: How the pandemic has upended the lives of refugees