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Colossal wants to resurrect the woolly mammoth
By Sage Lazzaro
Lab-grown woolly mammoths could walk the Earth in six years if geneticist's new start-up succeeds
By Cat Clifford
Scientists want to resurrect the woolly mammoth. They just got $15 million to make it happen
By Katie Hunt
Colossal launches with $15 million to bring back woolly mammoths - STAT
By Matthew Herper & Megan Molteni