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PBS News Hour

Farmers turn to seaweed to reduce methane emissions

Season 2025 Episode 104 | 7m 45s

As the world races to curb climate change, scientists are taking aim at cows, a surprisingly potent source of greenhouse gases. Science correspondent Miles O’Brien traveled from California to Mexico and Australia to explore a bold idea that could make a big impact. It's part of our series, Tipping Point.

Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by Consumer Cellular and Cunard Cruise Line. For a complete list of funders for the PBS NewsHour and PBS NewsHour weekend, click here.
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