Carbon Footprint Factsheet Center for Sustainable Systems

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“A carbon footprint is the total greenhouse gas (GHG) emissions caused directly and indirectly by an individual, organization, event or product.”1 It is calculated by summing the emissions resulting from every stage of a product or service’s lifetime (material production, manufacturing, use, and end-of-life). Throughout a product’s lifetime, or lifecycle, GHGs may be emitted, such as carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O), each with a greater or lesser ability to trap heat in the atmosphere.