FrA carbon footprint is an indicator that measures the impact of an action or activity on the environment. It is based on the amount of greenhouse gas (GHG) emitted during the action or activity, whether it is performed by a person, an organisation, a company, a government, an object, or a process. Contrary to popular belief, the carbon footprint doesn’t only measure CO2. It actually includes the combined emissions of three greenhouse gases: carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). However, to simplify its understanding, we express the carbon footprint in tons of CO2 equivalent (CO2e). (Source: Les Horizons)