The Gothenburg Protocol has been helping reduce emissions that cross borders. It was amended to add black carbon, a short-lived climate pollutant wreaking havoc on the Arctic. Credit: Sean Gallup/Getty Raise a hand if you’ve heard of the Gothenburg Protocol. No? Well, you’re in good company. This treaty has been called an "unsung hero" in the fight against air pollution and climate change. It may be unknown in the United States, but it is a landmark international agreement, setting limits on how much black carbon and other pollutants countries can emit. Black carbon, or soot, is seen as a […]


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