Maybe crying over spilled milk isn’t so crazy after all.

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Researchers at the University of Edinburgh have found that maybe we should be crying over spilled milk. The amount of milk that Brits waste every year—360,000 tons—is responsible for 100,000 tons of carbon dioxide emissions. That’s roughly equivalent to the output of 20,000 cars, and that’s just in the United Kingdom.

The research, published in the journal Nature Climate Change, looked more broadly at food waste in the UK, finding that people could reduce their own emissions pretty significantly by changing their shopping and eating habits.

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