Why Start Auditing? 2019 was the year I decided to stop having vague guilt about climate change and start measuring exactly what my carbon footprint looked like. You can’t manage what you don’t measure. Methodology I tracked four main categories: Home Energy - Electricity and gas usage Transportation - Flights, trains, cars, local travel Work Travel - Conferences, meetings, site visits Major Purchases - Electronics, furniture (embedded carbon) For each, I used standard conversion factors to calculate CO2 equivalent emissions.