I have committed the sin of leaving my last book half-finished.
Instead I read The Quantum Universe, revised 2nd ed. by Tony Hey & Patrick Walters which is a neat primer on quantum mechanics.
And I read Egg, by Richard Burton, which is a children's book with marvelous photographs of various species in the act of hatching.
I currently read Molecules, by Peter Atkins, which is a collection of descriptions of various molecules, where they are found in nature, what they usually react with, and their products.