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.Through 3-D printing and advanced tissue culturing, scientists can engineer slabs of in-vitro meat grown from progenitor myocyte stemcells. The price is high to purchase, and the taste is blander than every fast food chain ever, but will change in the future as technology and scientific understanding improves.
But why even do this other than to expand the realm of Science? Likely because we'll need to, unless you want to unwillingly extend your palette to insects and other arthropods like spiders.
1. The amount of water need to raise a cow from infancy to slaughter is 3-30 gallons of water per day. Cows eat 7x as much grain as the average human population. Lactating cows require twice as much water. The amount of water consumed is just too high to contain as both human and cow populations are increasing. And this is not accounting for other cattle.
2. The process of raising cattle and processing their meat consumes 18% of our total greenhouse gas emissions, CO2, CH4, NO2, etc. A very significant chunk compared to other energy consuming activities.
3. Land use increases for every farm as human and cattle populations increase, meaning land availability is getting more and more scarce.
There's other more miscellaneous factors at large, but the big point is that lab grown meat can prove to be a major environmental savior when it is mass-produced. Discuss as always.