Revealed: Mexico’s industrial boomtown is making goods for the US. Residents say they’re ‘breathing poison’

A new investigation reveals that Monterrey, Mexico, a major industrial hub producing goods largely for the US, is facing a severe air pollution crisis. The pollution, stemming from factories operated by international companies, contains high levels of toxic heavy metals and carbon dioxide, exceeding totals reported in many US states. Monterrey's air pollution levels are significantly higher than those in Los Angeles and contribute to thousands of deaths annually. Despite pollution reductions in other major North American cities, Monterrey's air quality remains persistently poor. Residents have staged protests, demanding government action to address the health risks associated with the city's air pollution.

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