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Scientists Made Real Leather Without Harming Any Animals

A North Carolina biotech company called Cultivated Biomaterials has successfully produced lab grown cow leather from the cells of Angel, a Black Angus cow living at Sweet Farm animal sanctuary in upstate New York, marking the first time consumers can purchase leather products from an animal that’s still alive and thriving. Biomedical engineer George Engelmayr grows Angel’s skin cells on plant based scaffolds made from materials like dandelion fluff and milkweed fibers in a bioreactor, where the cells produce collagen that gives leather its strength and flexibility before being tanned using tree bark powders instead of harsh chromium salts. The company is already selling jewelry featuring tiny pieces of this cultivated leather set into silver settings under glass as biological gemstones, with plans to expand into wallets, watch bands, and eventually handbags as they figure out how to make bigger and stronger sheets of material. Research suggests cultivated leather might use 80 percent less water and create 90 percent fewer emissions than traditional leather because the water used in the lab process can be recycled unlike in conventional tanneries, though the company hasn’t completed an independent environmental assessment yet.

The environmental benefits depend heavily on where the cell nutrients come from and what energy powers the growing equipment, with experts saying the numbers sound realistic but noting this is still a tiny operation more like a science experiment than a full solution to the leather industry’s massive environmental footprint. What makes this approach different from other alternative leather attempts is that Engelmayr is actually selling products to regular people and the leather comes from a specific living cow at a sanctuary rather than mushroom roots or bacterial materials that struggled to meet luxury brand durability standards. The global leather industry is currently worth more than 400 billion dollars and is tied to livestock farming that produces tons of greenhouse gases and uses massive amounts of water, creating enormous pressure to find sustainable alternatives that don’t require slaughtering billions of animals every year. Whether lab grown leather can ever compete with regular leather from tanneries on price and scale remains uncertain, but high end fashion has always paid premium prices for rare materials with compelling stories, and growing real leather from living cow cells without harming animals is definitely pointing the industry in an interesting new direction.

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