Think air pollution in the US is just a local problem? Think again – a new study published in the journal Biogeosciences finds that man-made ozone pollution in North America can cause European farmers to lose 1.2 million tons of wheat per year. Ozone pollution, which is partly produced by car exhaust and coal power plants, was already known to damage crops, but the new study demonstrates that ozone produced in the Northern Hemisphere has the ability to affect crop yields in separate continents that are located downwind. The findings prove that air pollution poses a serious threat to food security worldwide, and it reinforces the urgency to develop a binding agreement to curb emissions.
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