In a 1931, an issue of [The Strand Magazine](https://en.wikipedia.org/wiki/The_Strand_Magazine) published an article by Winston Churchill titled “Fifty Years Hence”, he predicted the following:

>[Fifty years hence], we shall escape the absurdity of growing a whole chicken in order to eat the breast or wing, by growing these parts separately under a suitable medium.

Conventional meat produced by rearing animals is associated with various important global problems, including greenhouse gas emissions. For instance, worldwide, 14.5% of all human-caused greenhouse gas emissions come from livestock supply chains [(FAO, 2016)](http://www.fao.org/3/a-i6345e.pdf), thereby contributing to climate change. Moreover, currently, livestock raised for meat use 30% of global ice-free terrestrial land and 8% of global freshwater [(Tuomisto et al., 2011)](http://2014falleng114.pbworks.com/w/file/fetch/88945115/cultured_meat_lca_es_t_published.pdf).

Additionally, many experts now believe that non-human animals have conscious experiences [(Low et al., 2012)](http://fcmconference.org/img/CambridgeDeclarationOnConsciousness.pdf). Moreover, empirical evidence suggests that many mammals and birds typically produced in agriculture, as well as fish, have the capacity feel pain [(Sneddon et al., 2014)](https://www.sciencedirect.com/science/article/pii/S0003347214003431). Hence, various animal welfare advocates are concerned that industrial farming practices create widespread suffering. 

In recent years, there has been increasing interest in alternative ways of producing meat, such as by way of producing animal muscle cells through tissue culture in a controlled factory environment, to produce clean meat. After selecting starter cells, these are treated to promote tissue growth, placed in a cultivator such as a bioreactor, supplied with energy requirements, and scaffolded to create a three-dimensional structure of animal tissue [(Post, 2012)](https://www.sciencedirect.com/science/article/pii/S0309174012001210).

If clean meat were available at a similar price to farmed animal products, consumption of these products could replace some amount of the demand for farmed animal products [(ACE, 2017)](https://animalcharityevaluators.org/research/other-topics/cost-competitive-timeline/). However, consumer acceptance of clean meat is still uncertain. Some survey evidence suggests that acceptance of clean meat will vary substantially across cultures [(Bryant et al., 2019)](https://www.frontiersin.org/articles/10.3389/fsufs.2019.00011/full).

In this part of the Animal Welfare Question series, we pose questions about the future of clean meat, in terms of the size of the industry, the successes of the relevant companies, and the commercial launch of clean meat products:

- [When will the first clean meat company be valued at ≥ $1bn?](https://www.metaculus.com/questions/3060/when-will-the-first-clean-meat-company-be-valued-at--1bn/)
- [How many months till at least three, billion dollar clean meat valuations after the first such company is first valued at ≥ $1bn?](https://www.metaculus.com/questions/3062/how-many-months-till-at-least-three-billion-dollar-clean-meat-valuations-after-the-first-such-company-is-first-valued-at--1bn/)
- [When will there be a publicly traded clean meat company?](https://www.metaculus.com/questions/3058/when-will-there-be-a-publicly-listed-clean-meat-company/)
- [When will there be a publicly traded clean fish company?](https://www.metaculus.com/questions/3059/when-will-there-be-a-publicly-listed-clean-fish-company/)
- [How much revenue will the U.S. market for clean meat generate, in the fiscal year 2027?](https://www.metaculus.com/questions/3065/how-much-revenue-will-the-us-market-for-clean-meat-generate-in-the-fiscal-year-2027/)
- [How much revenue will the U.S. market for clean meat generate, in the fiscal year 2030?](https://www.metaculus.com/questions/3077/how-much-revenue-will-the-us-market-for-clean-meat-generate-in-the-fiscal-year-2030/)
- [When will a *restaurant* first serve clean-meat products containing ≥20% clean meat, at $3 per 100 grams or cheaper?](https://www.metaculus.com/questions/3081/when-will-a-restaurant-first-serve-clean-meat-products-containing-20-clean-meat-at-3-per-100-grams-or-cheaper/)
- [When will a *restaurant* first serve clean-meat products containing ≥80% clean meat, at $3 per 100 grams or cheaper?](https://www.metaculus.com/questions/3086/when-will-a-restaurant-first-serve-clean-meat-products-containing-80-clean-meat-at-3-per-100-grams-or-cheaper/)
- [When will a supermarket sell a product made of ≥20% clean meat, for $3 per 100 grams or cheaper?](https://www.metaculus.com/questions/3087/when-will-a-supermarket-sell-a-product-made-of-20-clean-meat-for-3-per-100-grams-or-cheaper/)
- [When will a supermarket sell a product made of ≥80% clean meat, for $3 per 100 grams or cheaper?](https://www.metaculus.com/questions/3088/when-will-a-supermarket-sell-a-product-made-of-80-clean-meat-for-3-per-100-grams-or-cheaper/)
- [What will the lowest retail price, in USD per kg, of any product containing ≥50% clean meat be, in the calendar year 2026?](https://www.metaculus.com/questions/3103/what-will-the-lowest-retail-price-in-usd-per-kg-of-any-product-containing-50-clean-meat-be-in-the-calendar-year-2026/)
- [What will the lowest retail price, in USD per kg, of any product containing ≥50% clean meat be, in the calendar year 2029?](https://www.metaculus.com/questions/3104/what-will-the-lowest-retail-price-in-usd-per-kg-of-any-product-containing-50-clean-meat-be-in-the-calendar-year-2029/)
- [How many commercial cattle, in millions, will be slaughtered in the U.S. in 2032 if the lowest retail price of clean meat in 2026 is less than $8 per kg?](https://www.metaculus.com/questions/3113/how-many-commercial-cattle-in-millions-will-be-slaughtered-in-the-us-in-2032-if-the-lowest-retail-price-of-clean-meat-in-2026-is-less-than-8-per-kg/)
- [How many commercial cattle, in millions, will be slaughtered in the U.S. in 2032 if the lowest retail price of clean meat in 2026 is between $8 and $20 per kg?
](https://www.metaculus.com/questions/3115/how-many-commercial-cattle-in-millions-will-be-slaughtered-in-the-us-in-2032-if-the-lowest-retail-price-of-clean-meat-in-2026-is-between-8-and-20-per-kg/)