Fair rating? 0 0NOVA· Season 42 · Episode 9Killer LandslidesS42E09·6.5·November 19, 2014·1h·PBSScientists investigate the specific local geological and climatic factors behind the 2014 collapse of a hillside in Oso, Washington. Learn what triggered the deadliest U.S. landslide in decades.Streaming on (US) See allShare#20In Season 42of 22 rated episodes#255All-timeof 287 rated episodes−1.2vs season avgSeason 42 averages 7.72014First airedNovember 19, 2014PreviousEmperor's Ghost ArmyS42E08 · 8.7NextFirst Man on the MoonS42E10 · 8.6Keep going
