Guardian: American farmers are creating a stink over a proposed “cow tax” that would penalise them for owning belching and flatulent cattle and pigs. Livestock producers say that the government’s Environment Protection Agency (EPA) wants to charge them for rising levels of methane and other polluting nitrous gases emitted by their farm animals. Farmers say the fees of up to $175 (£119) a cow and $20 for each pig could put many of them out of business and lead to the wide-scale closure of …