Watch: Brazil’s Jundiaí River, ducks, and fish turn bright blue; What caused it and how officials are responding now

A truck accident in Sao Paulo, Brazil, caused a chemical spill. The blue dye leaked into the Jundiai River, changing its color. Emergency teams responded to contain the spill. The dye, containing acetic acid, poses a threat to the river's ecosystem. Authorities are investigating the cause and safety protocols.