When Obsidian introduced Cavas, it felt like a big leap forward for visual note-taking. Being able to map my ideas across an infinite space was refreshing compared to the rigid structure of a standard ...

Read all of Slate’s stories about the 25 Greatest Picture Books of the Past 25 Years. On Oct. 8, 2010, the New York Times ran a story on its front page: “Picture Books No Longer a Staple for Children.