Food Systems – particularly agriculture and the production of animal-based foods –are a major source of methane emissions. Methane (CH4) is a greenhouse gas that is many times more potent than carbon dioxide (CO₂). Our dietary choices can significantly influence these emissions. By reducing methane emissions, we not only lower the overall release of greenhouse gasses into the atmosphere, but we may also be able to mitigate some aspects of global warming.
Sources
[1] Crippa, M., E. Solazzo, D. Guizzardi, et al. (2021): Food systems are responsible for a third of global anthropogenic GHG emissions. Nature Food 2(3), 198–209.
[3] Xu, X., P. Sharma, et al. (2021): Global greenhouse gas emissions from animal-based foods are twice those of plant-based foods. Nature Food 2(9), 724–732.
[2] Babiker, M., G. Berndes, K. Blok et al. (2022): Cross-sectoral perspectives. In IPCC, 2022: Climate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [P.R. Shukla, J. Skea, R. Slade, A. Al Khourdajie, R. van Diemen, D. McCollum, M. Pathak, S. Some, P. Vyas, R. Fradera, M. Belkacemi, A. Hasija, G. Lisboa, S. Luz, J. Malley, (eds.)]. Cambridge University Press, Cambridge, UK and New York, NY, USA.
[4] Dataset (based on EDGARv6.0): Crippa, M., E. Solazzo, D. Guizzardi, et al. (2021): EDGAR-FOOD_v6. figshare. Doi:10.6084/m9.figshare.17067449
[5] Forster, P., T. Storelvmo, K. Armor, et al. (2021): The Earth’s Energy Budget, Climate Feedbacks, and Climate Sensitivity. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 923–1054
[6] Climate & Clean Air Coalition (2021): Benefits and costs of mitigating methane emissions. Available at: https://www.ccacoalition.org/content/benefits-and-costs-mitigating-methane-emissions [Accessed 10.04.2024]
[7] Climate & Clean Air Coalition (2017): One million premature deaths linked to ozone air pollution. Available at: https://www.ccacoalition.org/news/one-million-premature-deaths-linked-ozone-air-pollution [Accessed: 10.04.2024]
[8] IEA (2024): Global Methane Tracker 2024. Available at: https://www.iea.org/reports/global-methane-tracker-2024 [Accessed: 30.03.2025]
[9] IEA (2024): Global Methane Tracker 2024. Understanding methane emissions. Available at: https://www.iea.org/reports/global-methane-tracker-2024/understanding-methane-emissions [Accessed: 30.03.2025]
[10] United Nations Environment Programme & Climate and Clean Air Coalition (2021): Global Methane Assessment: Benefits and Costs of Mitigating Methane Emissions. United Nations Environment Program, Nairobi
[11] Nature (2021): Control methane to slow global warming — fast. Nature 596(7873), 461–461.
[12] Jones, M. W., G. P. Peters, T. Gasser, et al. (2023): National contributions to climate change due to historical emissions of carbon dioxide, methane, and nitrous oxide since 1850. Scientific Data 10(1), Springer Science and Business Media LLC, Doi: 10.1038/s41597-023-02041-1
[13] Jones, M. W., G. P. Peters, T. Gasser, et al. (2023): National contributions to climate change due to historical emissions of carbon dioxide, methane, and nitrous oxide [Data set]. Scientific Data (2024.2, Bd. 10, Nummer 155). Zenodo.
[14] Arndt, C., A. N. Hristov, W. J. Price, et al. (2022): Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050. Proceedings of the National Academy of Sciences 119(20), Proceedings of the National Academy of Sciences, doi:10.1073/pnas.2111294119
[15] ClimateWatch (2025): Historical GHG Emissions. Available at: https://www.climatewatchdata.org/ghg-emissions [Accessed: 06.04.2025]
[16] Global Methane Pledge (n.D.): Available at: https://www.globalmethanepledge.org/ [12.04.2025]
[17] European Environment Agency (2024): EEA greenhouse gasses – data viewer. Available at: https://www.eea.europa.eu/en/analysis/maps-and-charts/greenhouse-gasses-viewer-data-viewers [Accessed: 30.03.2025]
[18] Changing Markets Foundation (2022): High Steaks. Taking methane from animal farming out of its blindspot. Available at: https://changingmarkets.org/wp-content/uploads/2022/10/High-stakes-how-can-the-EU-take-methane-from-animal-farming-out-of-its-blindspot-part-2.pdf [Accessed: 30.03.2025]
[19] Olczak, M., A. Piebalgs & P. Balcombe (2023): A global review of methane policies reveals that only 13% of emissions are covered with unclear effectiveness. One Earth 6(5), 519–535. Doi:10.1016/j.oneear.2023.04.009
Frequently asked questions
What are the key facts about food systems and methane?
Farmed animals are responsible for 32% of global human-made methane emissions. If livestock production were a country, it would rank first for methane — as much as China, India and the USA combined. Methane is about 80 times more powerful than CO₂ over 20 years, but short-lived in the atmosphere. Agricultural methane needs to fall 30% by 2030 (versus 2010) to stay on track for climate goals. Cutting methane emissions 45% would prevent around 0.3°C of warming by 2040.
How do food systems contribute to methane emissions?
Farmed animals are responsible for 32% of global human-made methane emissions. If livestock production were a country, it would rank first for methane, emitting as much as China, India and the United States combined. Agriculture is the single largest food-system source of this powerful greenhouse gas.
Why does reducing methane matter for climate change?
Methane is about 80 times more powerful than CO₂ over 20 years but short-lived in the atmosphere, so cutting it delivers faster climate benefits. Reducing methane emissions 45% would prevent around 0.3°C of warming by 2040 — making it one of the quickest ways to slow near-term warming.