if you gave up beef and lamb only: what it is worth, in numbers

0.5 → 500 000 tonnes co2e about 0.5 tonnes of co2e and a quarter of a hectare of land, a year. and a small fraction of one cow.

method per-person, per-year estimate from the cited study (Poore & Nemecek 2018), 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.

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