By Dr. Seuss, Author & Illustrator. Dr. Seuss’s beloved story teaches kids to treat the planet with kindness and stand up and speak up for others. Experience the beauty of the Truffula Trees and the danger of taking our earth for granted in a story that is timely, playful, and hopeful. The book’s final pages teach us that just one small seed, or one small child, can make a difference. For ages 5 and up.