GREENER COWS These cows at the Ellinbank Dairy Research Centre in Victoria, Australia, wear backpacks that measure their methane output.
Eddie Jim/Fairfax Syndication
In a pasture outside Edmonton, Canada, you’ll find a few dozen cows doing what cows do: mostly eating. The average animal spends eight-plus hours a day filling its belly, or as is the case with cows, bellies.