There are many terrific “book sharing” programs around the world, but my favorites are always the projects operated by small groups of generous, dedicated book lovers. Books on the Subway is one of those heartwarming projects that makes a place like New York City habitable. Run by two Brooklynites, Rosy and Hollie, who call themselves “book fairies”, Books on the Subway is exactly what it says on the tin. The pair of bibliophiles leave donated books in subway cars and on platforms for MTA riders to pickup and read for free. They hope that the books will then be passed along to other readers. You can learn more on their website and follow the project on social media.