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Methane-Eating Microbes Pass Key Test Cutting Dairy Farm Emissions

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Bloomberg

Amazon-backed Windfall Bio’s technology removed more than 85% of the potent greenhouse gas from a manure lagoon.

By Olivia Raimonde

June 12, 2025 at 6:00 AM EDT

An Amazon.com Inc.-backed startup has successfully tested methane-eating microbes that can reduce dairy farm emissions.

Windfall Bio has completed a pilot with Straus Family Creamery and California-based Correia Family Dairy where its microbes — known as mems— removed more than 85% of the potent greenhouse gas from the farm’s manure lagoon. The test shows a novel pathway to reduce the planet-warming impact of animal agriculture, which is responsible for nearly a third of all methane emissions.

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*Photo courtesy of Windfall Bio*

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A person wearing a hat, gloves, and work clothes stands at an outdoor research station at Correia Family Dairy, pouring a reddish liquid into a large funnel-shaped container connected to hoses and pipes. Several plastic sample bottles sit on the ground nearby, and shade cloths overhead provide cover. The setup includes pumps, tubing, and monitoring devices, suggesting a water, soil, or nutrient treatment experiment.

These very hungry microbes devour a powerful pollutant

PETALUMA, Calif. — The cows had to be deterred from messing with the
experiment.

Researchers from a Bay Area technology company had come to the sprawling
dairy farm north of San Francisco to test an emerging solution to planetwarming emissions: microscopic pink organisms that eat methane, a potent
greenhouse gas.

Kenny Correia, 35, of Correia Family Dairy, watched the team from Windfall Bio
working near the lagoons used to store manure from the farm’s several hundred
cows. The researchers erected a futuristic system of vats, pipes, tubes and shiny
metal supports. Then, when everything was assembled, they poured pink liquid
into one of the vats. “They were looking like mad scientists out there,” Correia
recounted.

He acknowledged initially thinking it was a “crazy idea” to integrate an outdoor
laboratory into a working farm. There was the potential for the cows to “be all
over it — licking it, pulling out wires and scratching on it,” he said.
But livestock farms are a significant source of methane emissions, and Windfall
wanted to see how much the microbes could help.

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December 8, 2025
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