After years of mainly reading crime novels I've read a few great non fiction books recently and would like some ideas of what to read next. Genre not important as long as it's a great read and will help me learn something new. I've just finished 'Do no harm' by Henry Marsh, which is about brain surgery and I couldn't put it down. Not a topic I would normally think to read about!
So please recommend me some unputdownable non fiction.