Cities are a significant contributor to global methane emissions caused by human activities, but most cities lack complete information about the sources of this greenhouse gas. A team led by McGill University measured methane emissions in Montreal and found that two major sources of emissions in the city, historic landfills and manholes, were not included in the city’s inventory of greenhouse gas emissions.
“Cities are uniquely positioned to mitigate methane emissions as they face fewer political challenges than larger bodies such as provinces, states, territories, or countries,” says Mary Kang, an assistant professor in McGill’s Department of Civil Engineering and the senior author on the paper published recently in.
worked both in landfills and the sewers I agree with their conclusion