Colossal Biosciences built an artificial egg from scratch - and it's already hatching chicks. The company plans to use the technology to resurrect the New Zealand giant moa, a 3-metre tall bird extinct for 600 years, whose eggs were the size of rugby balls. If you can grow a bird embryo inside an artificial egg, you can gene-edit that embryo before it hatches, giving you a path to resurrect extinct species and rescue endangered ones without depending on natural eggs. It removes the single bigges

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