Frequently Asked Question
Environment & ClimateDoes methane from livestock matter for climate change?
Last reviewed: April 12, 2026
Summary
Yes, methane from livestock is a powerful driver of near-term warming. Methane is over 80 times more potent than CO2 over 20 years (IPCC AR6), and livestock are the single largest anthropogenic source of methane, responsible for roughly 32% of human-caused methane emissions.
Evidence Summary
Methane (CH4) from livestock is one of the most consequential greenhouse gases in the near term. While it persists in the atmosphere for only about 12 years (compared to centuries for CO2), its heat-trapping potency is far greater per molecule. According to the IPCC Sixth Assessment Report (AR6, 2021), biogenic methane (from livestock) has a Global Warming Potential of approximately 80.8 over 20 years (GWP-20) and approximately 27.2 over 100 years (GWP-100).