Humankind: A Hopeful History

I went through an emotional roller coaster reading this book. First hopeful, then depressed, then hopeful again... He presented arguments in a way that kind of kept you guessing what the take away was supposed to be. It was engaging and fascinating. It changed the way I think about a lot of things that I've always taken for granted. And in the end he gives practical advice. How should an ordinary person take and use all this information? It's a very insightful book, I highly recommend.