A new analysis shows U.S. farmers and ranchers continue to reduce per-unit greenhouse gas emissions. Data from the EPA and USDA shows the agricultural sector accounts for less than 10% of total U.S. emissions. The EPA's U.S. Inventory of Greenhouse Gas Emissions report finds that per-unit methane emissions from livestock have declined since 1990 as livestock producers have increased productivity.

During the past 30 years, U.S. milk production has increased 71%, while per-unit emissions of milk have declined by almost 25%. Beef production has increased almost 50%, while per-unit emissions have fallen nearly 8%. Meanwhile, American farmers are producing more crops on fewer acres.

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