Game of Thrones is a fantasy that features a lot of made-up science—fabricated climatology (when is winter coming?), astronomy, metallurgy, chemistry, and biology. Most fans of George R. R. Martin's fantastical world accept it all as part of the magic. A trained scientist, watching the fake science in Game of Thrones, might think, “But how would it work?” In Fire, Ice, and Physics, Rebecc…