In Texas, Mexican firefighters are saving the Rio Grande. Known as Los Diablos, or “the devils,” the elite firefighting crew is hired by the National Park Service to fight wildfires and conduct controlled burns along the border. The river provides water to more than 5 million people in the U.S. and Mexico, and sustaining its flow is vital. The water in the Rio Grande is already 150% over-allocated. In this short documentary, The Atlantic follows the group’s conservation efforts to rid the river of giant cane, an invasive plant that narrows the river and threatens native plants and fish.

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