The True Cost of American Food

Edible Marin and Wine Country

Photo courtesy of Douglas Gayeton

Straus Family Creamery—A Pioneer in Tipping the Scales

Dairy farmer Albert Straus cares about cow farts so you don’t have to. Seriously. Straus is obsessed with the impact that bovine belches have on the environment.

Who knew that cow flatulence was such a big deal in dairy farming?

There’s no covering the stink: While carbon dioxide gets most of the bad press, cow poo and wind play a significant role in global warming, too. Studies link enteric fermentation (that’s a geeky name for methane emissions—including cow gas) to climate change.

Consider this: Agriculture contributes 8% to total California greenhouse gas emissions, according to the state’s Air Resources Board. Digging deeper: Methane from microbial fermentation represents 30% and manure management 26% of total methane emissions in the Golden State, according to 2016 board data.

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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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