Scientists have created mice with two biological fathers. They say the technique could one day be replicated in humans.

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mouse skin cells
Microscopic view of cells on the left, alongside a stock image of mice

K. Hayashi/Kyushu University

Scientists are modifying catfish with alligator DNA to create hybrids for human consumption

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An alligator swallowing a catfish

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Billion-dollar startup plans to bring the dodo back from the dead, and claims it can also revive the woolly mammoth

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An artist illustration shows a white dodo looking towards the camera on a white background.
Collossal Biosciences aims to revive the long-extinct dodo using gene editing.

David Tipling/Education Images/Universal Images Group via Getty Images

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