Carbon footprint

[noun]

An estimate of the amount of greenhouse gases produced to support our day-to-day life. It can be calculated for a person, event, service, or product. On a larger scale, companies, businesses, even countries all produce a carbon footprint.

e.g To lower your carbon footprint, consider avoiding car journeys as each litre of fuel burnt in a car engine emits over 2.5 kg of CO2 and choose walking or cycling.