As usual, here is our round-up of the top-selling print books of 2015, sold in outlets tracked by Nielsen Bookscan. They year recorded the same number of books selling 1 million units or more — six — as did 2014, but the distribution shifted, with four of those top sellers in adult fiction (whereas a year ago, five of the top six were juvenile/YA titles). Notably, Anthony Doerr’s Pulitzer-winning novel sold more than four times as many print copies in 2015 as it did in 2014, when the book was first published. And with Veronica Roth and John Green giving up their […]