There was a term that emerged during the rescue effort: 'Oso Strong'. It's a familiar phrase after a tragedy, but it felt especially poignant after the landslide. The people of Oso and Darrington are known for their can-do attitude. On this final episode, Jake Whittenberg shows how the term...

What caused the Oso landslide? Jake Whittenberg speaks with University of Washington Geomorphology Professor David Montgomery, who was part of the team that produced a post-incident report, about the science behind the incident. A local firefighter who lost his wife in the slide also shares how...

Several days after the landslide, the death toll was growing, and the severity of the situation was setting in. At one point, first responders said they were searching for as many as 200 missing people. In this episode, Jake Whittenberg talks to local officials and emergency managers, who recall...