Canada Is Using Genetics to Make Cows Less Gassy
Breeding—or someday even genetically engineering—a more efficient cow would make a dent in greenhouse gas emissions.
NUMBER 1995 IS a very special cow. Every day, this Holstein, mostly black with a white cat-face-shaped spot on her forehead, sticks her head into a trough that measures the exact amount of feed she eats. She’s had her genome partially sequenced, and will soon get her breath checked for methane several times a day…….