Hi all - I recently finished a fantastic book (The Hidden Life of Trees - Wohlleben) that was packed with tons of mostly footnoted facts, a bunch of which I was unaware. One explained about how trees need to rest at night like people, and how city light affects seasonal dormancy and tree health. He mentioned an American city (Wohlleben is a forester in Germany/central Europe) whose oaks were suffering, and that 4% of them had died because they were subjected to light every night. Unfortunately, this info was part of a 1981 report in a German journal called Gartenamt, and my online search to discover where this happened, and if they remedied the problem in time, has been fruitless. I figure if it made it to a German publication, surely it had to be in one on this continent...? I know solving this is a long shot, but I know some of you guys have been doing this awhile, so thought I'd throw this out there. Any arborist/environmental entities that might include this story that you might know of?