I’m currently half way through a great book by Jared Diamond called Guns, Germs, and Steel: The Fates of Human Societies.
It delves into 30,000 years of human history and tries to answer the question how some cultures were able to dominate over others and become successful. Its an incredibly interesting book and the author has done a ton of research. If you’re too lazy to read it, its also available on DVD from National Geographic.
It doesn’t have anything to do with investing but I had to recommend it nonetheless. On the other hand, anything you learn can spark a million dollar idea! Check out some really dumb ideas that made millions.