“Like Tolkien I do not write allegory, at least not intentionally. Obviously you live in the world and you’re affected by the world around you, so some things sink in on some level, but, if I really wanted to write about climate change in the 21st century I’d write a novel about climate change in the 21st century. Sometimes things happen that are hard to believe. You have to remember I’ve been writing these since 1991, in a couple of the recent books Daenerys Targaryen wielding the massive milit