Thousands of liters of chemicals dumped into Brazilian river during deadly bridge collapse
By Mauricio Torres and Lex Harvey, CNN (CNN) — Brazilian authorities are investigating after a bridge collapsed Sunday, killing at least four people and sending trucks loaded with sulfuric acid and pesticides plunging into a river, raising concerns about water contamination. More than a dozen people are missing after the 533-meter-long Juscelino Kubitschek de Oliveira
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