Climate change is one of the defining issues of our time. Weather patterns are shifting and sea levels are rising. The most abundant greenhouse gas, accounting for about two-thirds of total greenhouse gas emissions, is carbon dioxide (CO2). CO2 is largely the product of burning fossil fuel and therefore the traveling towards the conference venue is expected to be a main contributor to the carbon footprint of the annual ISMRM meeting. This work estimates the C02 emissions of the past ISMRM meetings and tries to give data driven recommendation for future selection of ISMRM conference locations.