For decades, billions of gallons of sewage and industrial waste have been dumped into the Tijuana River. Recent research shows this chronically contaminated watershed in Southern California is also polluting the air. | Collector

For decades, billions of gallons of sewage and industrial waste have been dumped into the Tijuana River. Recent research shows this chronically contaminated watershed in Southern California is also polluting the air.

Associated Press

For decades, billions of gallons of sewage and industrial waste have been dumped into the Tijuana River. Recent research shows this chronically contaminated watershed in Southern California is also polluting the air.

For decades, billions of gallons of sewage and industrial waste have been dumped into the Tijuana River. Recent research shows this chronically contaminated watershed in Southern California is also polluting the air.

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