Environmental activists brought the legacy of Brazil’s Mariana dam disaster to the COP30 climate summit, demanding justice and stronger accountability for mining-related environmental damage. The 2015 collapse of the Samarco dam in Mariana, Minas Gerais, killed 19 people and unleashed toxic sludge that contaminated hundreds of kilometers of rivers and communities.<br /><br />At COP30, campaigners displayed banners and art installations symbolizing the ongoing impact on affected families and ecosystems, urging world leaders to take concrete action on industrial accountability and environmental restoration.
