The American chestnut once dominated Eastern North America, with the total number of trees estimated at 4 billion a little more than a century ago. 456 more words
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Capping decades of research, two groups of plant breeders and geneticists appear to have arrived independently within reach of the same arboreal holy grail: creating an American chestnut tree that can, at long last, withstand the devastating fungus blight that wiped the trees out by the billions in the first half of the 20th century.