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PBS News Hour

Farmers turn to seaweed to reduce methane emissions

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.

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June 10, 2025 - PBS News Hour full episode
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