50 → 50 million kilograms co2e about 50 kilograms of co2e a year: food in landfill makes methane, food in a heap makes soil.
method per-person, per-year estimate from the cited study (US EPA WARM), 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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