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What is a carbon footprint? (US guide)

Map USA from space at night

Introduction: A measurable definition If you are asking what is a carbon footprint, the short answer is this: A carbon footprint is the total amount of greenhouse gases (GHGs) caused directly and indirectly by an individual, expressed in tons of carbon dioxide equivalent (tCO₂e) per year. In the United States, the average individual footprint is […]