Sciencecalendar_todayLast updated: Apr 2026
What is Carbon Footprint?
/ˈkɑːbən ˈfʊtprɪnt/
A carbon footprint is the total amount of greenhouse gases — primarily carbon dioxide and methane — produced directly or indirectly by an individual, organisation, product, or event, measured in tonnes of CO₂ equivalent.
lightbulb
Everyday Example
Flying from London to New York and back creates approximately 1.7 tonnes of CO₂ — roughly equivalent to heating an average UK home for six months.
publicReal-World Application
“The concept was popularised by BP in a 2004 advertising campaign — an exercise in shifting responsibility for climate change from oil companies to individual consumers.”
psychology
Did you know?
Carbon footprints are measured using life-cycle analysis, which traces emissions from raw material extraction through to disposal. An electric car's footprint includes manufacturing its battery.
emoji_objects
Key Insight
Individual carbon footprints matter, but 71% of global emissions come from just 100 companies. Both individual action and systemic change are necessary — neither alone is sufficient.
Want to learn Carbon Footprint in 60 seconds?
Join 50,000+ learners snacking on knowledge daily.