With winter in full swing and the holiday season upon us, you might be thinking of roasting some chestnuts over an open fire. Sadly, if you want to do this there is a very good chance it isn’t possible. The American chestnut tree has been essentially extinct in the wild for more than 50 years, and this once-staple of the eastern United States is now nowhere to be seen. But scientists are trying to help the delicious nut-bearing tree make a comeback, and they are doing so in some revolutionary ways.
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