State of the Planet

News from the Columbia Climate School

Divert Biodegradable Waste From Landfills to Cut Climate-Warming Methane Emissions

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Landfills are one of the largest drivers of methane pollution in the U.S. and globally, but they don’t have to be. If we were to invest in infrastructure to divert all food and other organic waste from landfills, we could slash landfill methane emissions entirely.

I am one of 35 scientists, including four from Columbia, calling on U.S. climate leaders to push for policies aimed at diverting the nearly 300 tons of organic waste that the United States send to landfills each year. As UN climate talks got underway last week, the United States and European Union are leading a Global Methane Pledge to encourage countries to cut emissions by at least 30 percent by 2030. The U.S. could be well on its way to reaching this 30 percent goal merely by changing how we deal with biodegradable waste.

Read the rest of the story here.

Nickolas J. Themelis directs graduate research in the area of sustainable waste management. 

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Blue banner with kids and Earth photos. Text: "Lamont-Doherty Earth Observatory Open House, Saturday, October 17, 2026, 10am-4pm.

On Saturday, October 17, 2026 from 10am to 4pm, Lamont-Doherty Earth Observatory Open House—our biggest, best science fun and discovery event of the year—will take place on our beautiful campus in Palisades, NY. Mark your calendar and join us for this free, family-friendly celebration of science! RSVP Today!

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