Is cultured meat the path to carbon neutrality in agriculture?

Meat grown from animal cells in bioreactors could avoid the methane, manure and land use of livestock. But bioreactors need energy and purified growth media, so the climate benefit depends on how it is made.

Question

Is cultured (cultivated) meat the path to carbon neutrality in agriculture? This means comparing the life-cycle emissions and warming effect of cultured meat at commercial scale with beef, pork and chicken, and finding which choices (energy source, culture medium, scale) decide the outcome.

Background

The question is in the theme "mitigating climate change through agriculture" of the 100 essential questions for the future of agriculture, compiled from 419 questions submitted worldwide in 2022. The authors note that agriculture and related land use produce about 20% of global greenhouse gas emissions, with livestock responsible for two-thirds of agriculture's non-CO₂ emissions [1].

What is known

• Cattle emit mostly methane, which does not accumulate, while cultured meat emits mostly CO₂ from energy, which does; a climate model showed cultured meat causing less warming than cattle at first, but the gap narrows over the long term and in some cases cattle cause far less warming [2].
• An ex-ante assessment of commercial production in 2030, using data from more than 15 companies, found a carbon footprint substantially lower than beef and, with renewable energy, comparable to an ambitious chicken benchmark [3].
• A cradle-to-gate assessment of near-term production found that impacts could be significantly higher than those of beef if a highly refined growth medium is used [4].
• The first assessment based on primary data from an industrial-scale process (400–600 kg a day, sold first as a pet-food ingredient) found 4.7 kg CO₂-equivalent per kg in a key scenario and 3.3 kg with all identified improvements, comparable to or lower than conventional chicken [5].

What would count as progress

No single result settles a question like this; contributions like these would move it forward:

• Life-cycle assessments from more operating facilities that follow the 2025 consensus guidelines for cultivated meat [6], with inventories released.
• Climate comparisons that use warming over time rather than a single CO₂-equivalent factor, under explicit scenarios for the energy mix.
• Techno-economic and life-cycle studies of low-impact, food-grade culture media, a main identified hotspot.

References

1. Hu, Y. et al. (2023). 100 essential questions for the future of agriculture. Modern Agriculture 1(1), 4–12.
2. Lynch, J. & Pierrehumbert, R. (2019). Climate impacts of cultured meat and beef cattle. Frontiers in Sustainable Food Systems 3, 5.
3. Sinke, P. et al. (2023). Ex-ante life cycle assessment of commercial-scale cultivated meat production in 2030. The International Journal of Life Cycle Assessment 28(3), 234–254.
4. Risner, D. et al. (2025). Environmental impacts of cultured meat: a cradle-to-gate life cycle assessment. ACS Food Science & Technology 5(1), 61–74.
5. Stieberová, B. et al. (2026). Life cycle assessment of industrial-scale cultivated meat production: case study of real market entry via pet food application. The International Journal of Life Cycle Assessment 31(4), 62.
6. Blackstone, N. T. et al. (2025). Guidelines for environmental life cycle assessment of cultivated meat. The International Journal of Life Cycle Assessment 30(12), 2943–2963.

Source

Imported from 100 essential questions for the future of agriculture, question 13, curated by Hu et al. Listed as open in the source (2023) and still an active research question as of 2026-10-20. The statement above is written in our own words; see the source for the original wording, history and discussion.