Washington Post: The more scientists investigate the amount of perfectly good food humans waste, the clearer it becomes that this is a huge global problem, both for the planet’s food security and for the environment. Researchers have proposed all kinds of ways to help address the issue, from improving methods for harvesting and processing crops to changing the expiration dates on packaged food. And now, experts have come up with another way to help governments and businesses all over the world keep track of the amount…

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