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  "Description": "A handy tool to calculate carbon footprints from air\ntravel based on three-letter International Air Transport\nAssociation (IATA) airport codes or latitude and longitude.\nfootprint first calculates the great-circle distance between\ndeparture and arrival destinations. It then uses the Department\nof Environment, Food & Rural Affairs (DEFRA) greenhouse gas\nconversion factors for business air travel to estimate the\ncarbon footprint. These conversion factors consider trip\nlength, flight class (e.g. economy, business), and emissions\nmetric (e.g. carbon dioxide equivalent, methane).",
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