Ask HN: Recommended non-technical reading

I haven't read a non-technical book in several years, but I finally have time to read again. I'm looking for some good book recommendations. I got a degree in physics 20 years ago. I'd love to know some good math and science books that are non-technical, but also don't overly simplify things. I went to Barnes and Noble today, but couldn't tell quickly what recent books have substance and which are full of fluff. Any recommendations?