New Family Tree Illuminates 'Big Bang' in Bird Evolution After Dinosaur Extinction

National Geographic - David Ray, a biologist at Texas Tech University, discusses a massive genetics project, published in the peer-reviewed journal, Science, that involves genetic codes of birds and crocodiles.

David Ray, a biologist at Texas Tech University, discusses a massive genetics project, published in the peer-reviewed journal, Science, that involves genetic codes of birds and crocodiles.

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