Food drives a third of global emissions

Overall the report found that food-system emissions represented 34 percent of total greenhouse gas output.

About half of these emissions were carbon dioxide, chiefly from land use—mainly carbon losses from deforestation and degradation of organic soils—as well as energy from steps like packaging, transportation and processing.

A further third of emissions were from methane—which is 28 times more potent than CO2 as a greenhouse gas over a 100-year period—released by livestock like cows, sheep and goats, as well as from rice production and in the disposal of biowaste.


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