Scientists warn San Diego County air laced with toxic ‘sewer gas’

The unfettered travel of wastewater from the Tijuana River has not lone been threatening Southern California’s beaches, but it has besides unleashed alarming amounts of toxic state successful country communities, a caller survey has found. The cross-border waterway, which originates successful Mexico’s Baja California, has been emitting hydrogen sulfide — known arsenic “sewer gas” due…