 This Bloomberg Money Minute is brought to you by the Law Office of Kelm & Reuter. Attorneys that make a difference. Online at kelmreuter.com. This is a Bloomberg Money Minute. Cows and their manure are major sources of methane, a potent greenhouse gas. The U.N. says livestock account for about 32% of human-caused methane emissions. Some states, like California, are encouraging dairies to install methane digesters. Brent Wickstrom of Wickstrom Jersey Farms tells the Associated Press the idea is to capture the methane.