The extent and duration of the Pax Romana in Europe was greatly facilitated by climatic conditions that favored Roman – as opposed to Celtic – economic, social, and political organization. Not only were Roman patterns of settlement and land use in marked dstinction to those of Celtic polities, the were especially suited to the mediterraneanized cliamte of Europe.
I’ll definitely have to look into this some more, though I”m not sure I understands the connection between Boston basketball and global warming. My primary concern right now, though, is that it’s too cold to go for a bike ride. I fear global cooling and a coming ice age. But the Celtics will no doubt prosper, as they did in the Bill Russell era – guess there’s always winners and losers.