Survivors fight for justice over devastating 2015 Brazil dam collapse

A dam in the Brazilian city of Mariana collapsed in 2015, submerging dozens of homes in toxic waste, killing 19 people and displacing hundreds. Now a court in the U.K. has agreed to hear a $6bn-dollar lawsuit against the Anglo-Australian mining company BHP — which co-managed the dam. We hear from Jonathan Knowles, one of the plaintiffs in the case; Tom Goodhead, a lawyer with P.G.M.B.M., the British law firm behind the lawsuit; and Catherine Coumans, research coordinator and Asia-Pacific program coordinator for MiningWatch Canada.