S.M. Stirling

I'm currently reading Stirling's Dies The Fire. I have just gotten started really, but it is obvious from some not so subtle clues that this book answers the question of what happened to the rest of the world when the island of Nantucket went back in time. ( In Stirling's alternate history trilology ) Apparently the event has rendered all electrical technology useless, and also prevents high energy chemical reactions, since modern gunpowder doesn't work anymore either. Looks like a field day for the SCA types. It's very readable so far.