Big Blue Marble Bookstore is an independently owned bookstore located in the Mt. Airy section of Philadelphia that specializes in progressive and multicultural titles of interest to Philadelphians in general and Mt. Airy-ites in particular: children’s books; woman-centered pregnancy and parenting; sustainable living; queer, African-American, and Jewish studies; feminist science fiction; literary graphic novels; and more. They host readings, events, book clubs, and other groups throughout the year.