Blognor Regis has the scoop on moves to reduce the flatulence contribution of cows to global warming. Apparently Kangaroos are also large fart contributors to the environment, but that they have different enzymes, significantly reducing the carbon dioxide contribution.
The obvious solution, a joint breeding research programme. Look for Cowaroo meat in the Supermarket in the coming years. Challenges will be how to round up bouncing cows and maintaining the quality and quantity of milk.