First, the hog waste is placed in an anaerobic digester, which contains bacteria that consume the manure and release methane gas.

FORBES: Written by John Platt

Many cows are already fed bacteria much like those in yogurt that reduce the amount of O157:H7 in manure.

FORBES: Magazine Article

The bacteria can contaminate vegetables, meats, and other foods that come in contact with contaminated soil or manure.

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