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These Manure Digesters Incorporate Food Scraps. Does That Make Them Better?

Civil Eats

The waste grease, collected from a local pizzeria, a Mexican restaurant, and a pub, will be mixed with manure in the dairy farm’s anerobic co-digester and converted into renewable energy. Methane gas digesters are used by dairy farms to convert manure into energy and reduce their greenhouse gas (GHG) emissions.

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This Car-Free Michigan Island Is Leading on Composting

Civil Eats

At the island’s solid waste facility—hidden away in the hills and surrounded by forestland—piles of food scraps, manure, and green waste slowly turn to soil. Workers collect horse manure by bike along the streets of downtown Mackinac Island. Since horses provide transportation on the island, Mackinac compost contains a lot of manure.

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Closing the Loop on Poop

Modern Farmer

Farmers and gardeners often use livestock manure from poultry, cattle or horses. As snow melted, piles of manure reappeared and infiltrated waterways. “Since it’s from dog manure, it is not recommended for vegetables, but there are a lot of other uses for it,” says ranger Mitch Flanigan.

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Managing Dairy Slurry to Maximize Nutrient Capture

UnderstandingAg

Manure slurry is a valuable but difficult resource to manage on dairy farms. Slurry pits must be emptied to make room for the never-ending stream of manure. Manure is often not a top priority for most dairies and handling may have to wait until seasonal fieldwork is completed. This causes the soil microbiology to go dormant.

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Bringing Back Local Milk, Ice Cream, and Cheese

Civil Eats

In just three years, the 25-year-old entrepreneur, who started off with a seasonal pushcart, has opened two shops and now distributes pints to about 60 grocery stores in Oregon and Washington. Using a $40,000 DBII grant, he’s acquired an additional fleet of machines and is working toward nationwide distribution.

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Is California giving its methane digesters too much credit?

The Counter

Every year, California dairy farms emit hundreds of thousands of tons of the potent greenhouse gas methane, which gets released when livestock operations pool manure in open-air lagoons. However, according to aggregate program data, manure-based fuels generated a total of over 2.1 This story was published in partnership with Grist.

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A Real Solution to the Cattle Industry’s ‘Methane Problem’

UnderstandingAg

Processing and distributing these energy products release additional greenhouse gases, as well as when we create electricity, cook our food, or while we’re standing still idling in traffic on a highway or downtown in any metropolitan area. There is fossil carbon in the form of natural gas (methane), oil and coal.

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