Evening Post: Plans to graze cattle in a Bristol park to provide beef for city schools have come under fire from vegans and environmental campaigners. One opponent of the city council plan to produce its own meat supply claims it would be “like opening a new runway at an airport” — because of the greenhouse gas emissions caused when cows break wind and burp. The council announced it wanted to acquire Stoke Park, the 200-acre parkland in front of the landmark Dower House alongside the M32 …