BERKELEY (CBS/AP) – A Michigan nurseryman and his team of tree climbers and horticulturists have cloned the world’s biggest redwoods and giant sequoias, including some cut down more than a century ago.

Starting Tuesday, they plan to start planting 250 of them—all gathered in California—on a ranch on the southern Oregon Coast.

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David Milarch, co-founder of the Archangel Ancient Tree Archive, says the trees planted outside Port Orford, Ore., will be the start of a campaign to establish some of the world’s fastest-growing trees around the globe to combat global warming.

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Bill Libby, professor emeritus of forestry and genetics at the University of California at Berkeley, said the project will also help demonstrate how much genetics has to do with whether a tree gets really big.

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