car-free 2.4 · solar on the roof 2.4 · insulate or heat pump 2 · one fewer long flight 1.6 · a real green tariff 1.5 · no meat 0.8 · no beef 0.5 · half the meat 0.4 · no food waste 0.3 · no dairy 0.3 · no new clothes 0.25 · recycle everything 0.2 · thermostat down 0.1 · hang the washing 0.07 · eat local 0.05 · compost 0.05 · led bulbs 0.05 · cold wash 0.03 · keep the phone 0.03 · hair, showers, towels, bottles, taps 0.02 and under.
method per-person, per-year estimate from the cited study (Wynes & Nicholas 2017; Poore & Nemecek 2018; the sources on each screen), world-average where the study allows; the million-people column is straight multiplication. 'for scale' divides by 0.8 t CO2e, the meat-free yardstick.
the sources behind every line, the range and the weakness, the worked examples, the live embed and its code, and the dispute line are for people who sign in. an email address, no password, one link. continue →