This week, the world met the woolly “mammouse”—a genetically engineered mouse with woolly mammoth hair. The scientists at Colossal Biosciences who created it think it’s a promising step ...

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Could it be a mammoth tusk? In West Texas? "I was skeptical when a deer hunter showed me a picture of what he thought was a fossil," O2 Ranch Manager Will Juett said in a news release.