The Emerald Ash Borer has been threatening to establish in NH for the past decade. I first became aware of the invasive beetle while walking on a back road in the southwestern portion of the state, noticing odd purple boxes well up in the trees. I learned they were there for detection, and as yet, none had been found in NH.
When it first showed up, it was not in some border town, but well into central NH in a state park. Meaning that it had arrived on someone's firewood from another state. It is the very typical human attitude to regard small chances as zero chance - especially when it will cost you a few bucks to buy firewood near the park here. We have a dozen excuses. We are sure we won't be doing any harm. And then we do.
I saw the damage they do to the ash, called "blonding" over near my son's house today. He and his neighbors are suddenly going to have to take out a dozen trees, and we don't know how extensive this is. I took one look at the result and said "that tree's not going to make it." I saw more - none of them will make it, you can see on sight. There are efforts to slow the spread in the hopes of identifying some solution in time, but thus far the loss of most North American species of ash looks inevitable. I like ashes and will be sad to see them go. I had two large ones at my first house. They are very good firewood, splitting easily and even usable green in a pinch. Ash wood wet and ash wood dry, a king shall warm his slippers by. Ash is used for baseball bats, for flooring, for canoe paddles.
The tree has been important culturally, in myth and legend. Now it looks like it is going away.