Well, if they could just harness those cow burps and use the energy. An interesting engineering problem.
apnews.com

New Zealand proposes taxing cow burps, angering farmers
WELLINGTON, New Zealand (AP) — New Zealand's government on Tuesday proposed taxing the greenhouse gasses that farm animals make from burping and peeing as part of a plan to tackle climate change. The government said the farm levy would be a world first, and that farmers should be able to recoup...
