Shopping carts full of items we think we need and which take up space in the fridge may eventually get thrown out.

A recent report from the United Nations shows that in 2022 alone, a billion meals were thrown out worldwide, and more than 60% of that waste came from households.

Food waste makes up nearly a quarter of trash that winds up in landfills in the United States, according to the Environmental Protection Agency. That landfill waste releases more than half of U.S. fugitive methane emissions – the most potent greenhouse gas in the atmosphere.

To read more about Professor Koch's conversration with GMA, click here