Mad Science? Growing Meat Without Animals. Livestock take up 70% of all agricultural land – 30% of Earth land surface, generate 18% of geenhouse gases, more than all vehicles on Earth. Some ethical or perception questions do exist.To grow meat in labs from satellite cells, the researchers suggested current tissue-engineering techniques, where stem cells are often embedded in synthetic three-dimensional biodegradable matrixes that can present the chemical and physical environments that cells need to develop properly. Other key factors would involve electrically stimulating and mechanically stretching the muscles to exercise them, helping them mature properly

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