Experts say nobody knows. But Mr. Adee, who said he had long scorned environmentalists’ hand-wringing about such issues, said he was starting to wonder whether

Experts say nobody knows. But Mr. Adee, who said he had long scorned environmentalists’ hand-wringing about such issues, said he was starting to wonder whether they had a point. That's encouraging and frustrating at the same time. Encouraging to see that minds can change; discouraging to see another illustration that it so often requires being screwed over personally to change it.