Fears for future of Mexico City's 'green lung'

A major construction project in wetlands seen as one of the "green lungs" of smog-choked Mexico City has raised concerns for the future of the UNESCO World Heritage Site.

States, cities challenge Trump mileage standards rollback

Nearly two dozen states and several cities on Wednesday filed a legal challenge to the Trump administration's rollback of Obama-era mileage standards, saying science backed up the old regulations developed with the help of ...

New study finds EPA mercury analysis is 'seriously flawed'

A new study by experts from prominent academic institutions finds that an EPA cost-benefit analysis of its Mercury and Air Toxics Standards is "seriously flawed." The authors assert that the analysis disregards public health ...

Mine spill turns PNG coastline red

Papua New Guinea officials have sealed off the area around a Chinese-owned nickel plant in the north of the country after the leakage of potentially toxic slurry that has turned the ocean red.

US government unveils final Utah monument plan

The U.S. government's final management plan for land in and around a Utah national monument that President Donald Trump downsized doesn't include many new protections for the cliffs, canyons, waterfalls and arches found there, ...

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