Every time I fly to New York, I'm struck by how many trees there are in the densely-populated areas around the city. (Coming from the West Coast, one arrives over the Garden State, and the suitability of the sobriquet is quite apparent from the air.) It feels like this degree of tree cover in highly populated areas is atypical (the environs of places like Paris, London, Los Angeles, Melbourne, Tokyo, etc., look very different), so I asked the LLM to investigate. It found GHSL 2020 population and ESA WorldCover 2021 10m land-cover data, and concluded that New York is in fact quite unusual. As far as I can tell, it's because of some combination of: * A very favorable climate. (Trees grow quickly without irrigation.) * Marginal farmland. (Readily outcompeted by the Midwest in the 19th century.) * Together yielding reforestation before the advent of suburbs. * And a preference for development patterns that include trees. (Japan's climate is very hospitable, but one sees far fewer trees in the populated areas around the major cities -- forest and habitation are more disjoint.)