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In page Revive & Restore:

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In 2013 Revive & Restore organized the first public meeting on de-extinction.[2] Their founding projects include the de-extinction of the passenger pigeon[3] and heath hen.[4] Another one of their founding projects was to revive the woolly mammoth, but the project was given to George Church in 2021 and is now managed by Colossal Biosciences.[5] Since then, Revive & Restore has established partnerships with research institutions, governmental agencies, and conservation organizations on a broad range of genetic rescue programs.[citation needed]