GIVE up lamb roasts and save the planet. Government advisers are developing menus to combat climate change by cutting out “high carbon” food such as meat from sheep, whose burping poses a serious threat to the environment. Out will go kebabs, greenhouse tomatoes and alcohol. Instead, diners will be encouraged to consume more potatoes and seasonal vegetables, as well as pork and chicken, which generate fewer carbon emissions. “Changing our lifestyles, including our diets, is going to be one of the crucial elements in cutting carbon emissions,” said David Kennedy, chief executive of the Committee on Climate Change. Kennedy has...