Looking back at the devastating Indian Ocean tsunami 20 years later

This week marks 20 years since one of the worst natural disasters in modern history. In 2004, a 9.1 magnitude earthquake off the island of Sumatra in western Indonesia triggered a tsunami in the Indian Ocean that killed more than 220,000 people across 12 countries. Ali Rogin speaks with Daniel Bogado, director and executive producer of the new documentary "Tsunami: Race Against Time," for more. PBS News is supported by - https://www.pbs.org/newshour/about/funders