A measure of the impact our actions and daily activities have on our planet and the climate.-a carbon footprint is the total set of ghg (greenhouse gas) emissions caused directly and indirectly by an individual, organization, event or product (uk carbon trust 2008). an individual, nation or organizations carbon footprint is measured by undertaking a ghg emissions assessment. once the size of a carbon footprint is known, a strategy can be devised to reduce it.carbon offsets, or the mitigation of carbon emissions through the development of alternative projects such as solar or wind energy or reforestation, represent one way of managing a carbon footprint.the concept and name of the carbon footprint originates from the ecological footprint discussion.[1] the carbon footprint is a subset of the ecological footprint.