Tiny little libraries are popping up all around the world - outside homes, in stores, along bike paths... It all started when Todd Bol built a replica of a one-room school house and put it on a post outside his home in Hudson, Wisconsin to honor his mother, a teacher with a passion for reading. He filled it with books and put up a sign: "Free Book Exchange. Take a book. Return a book." Now, Todd and his friend, Rick Brooks, advise others on how to build their own little libraries, which spark creative expression, promote literacy and build community.