compost
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NYC’s Composting Rates Are Low. A Sustainability Expert Thinks AI Will Offer a Solution. Eventually.
Steve Cohen, director of Columbia’s M.S. in Sustainability Management program, discusses the present and future of food waste programs in NYC.
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Introducing the ‘Food Pod for Humanity’ Podcast
The Food Pod for Humanity podcast explores topics at the intersection of food systems and climate change.
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Food Waste and the Complexity of New York City’s Garbage
The goal of reusing food waste is worthwhile, though NYC’s new mandatory residential food recycling has some design problems.
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New York City’s Food Waste and the Circular Economy
Food waste provides an opportunity for New York City to place itself on the cutting edge of waste recycling.
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Composting—Turning Garbage into Black Gold
Forty percent of our food is wasted, but through composting, food waste can be turned into black gold—so called because compost, the mixture of decayed organic matter, is valuable as a nutrient-rich soil additive. In the United States, however, less than 3 percent of food waste is composted.

AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
