A video filmed from a helicopter has revealed the horrific aftermath of a southeastern Brazilian dam collapse, in which 17 are feared dead and dozens missing. It shows a huge rural area flooded with toxic mud, destroyed homes, and cars washed onto rooftops.
A dam holding back water from an iron ore mine near Mariana, Brazil, has burst. Officials say one person is confirmed dead. But there are reports that up to 16 have died and others are missing. Authorities have warned that the water mixed with residue from mining operations could be toxic. Julia Carneiro reports.