Ceramic honeycomb air filters could cut city pollution

A new type of outdoor filter that could cut city air pollution and is scheduled to be debuted at the 2024 Paris Olympics has been awarded the €3 million Horizon Prize on materials for clean air.

Trump eases US methane rules as Colorado says state's work

The Trump administration is rolling back some U.S. regulations on climate-changing methane pollution, calling them expensive and burdensome, but Colorado says its rules are working—and they have industry support.

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