Stories kids read. Ideas kids wear. One unforgettable box built around a rainbow-colored hot spring that even NASA is still studying. For the child who asks, “How does that work?”

Premium pieces made from organic/BCI cotton and recycled fibers. Tagless for comfort. Designed in New York, Los Angeles, and Tokyo. Each item connects directly to the book’s story. Select pieces feature peek-and-discover flaps that reveal hidden artwork, or discovery pockets with colorful images tucked inside.

This book takes children on a journey through Yellowstone to stand at the edge of a rainbow-colored hot spring—captured in real photography of a place most adults have never seen. They’ll learn about geothermal heat, thermophiles, and photosynthesis in bacteria. Some of the questions explored in this book don’t yet have answers—not even from NASA.

This hardcover book invites readers to experience the mystery and beauty of Yellowstone’s Grand Prismatic Spring. Children encounter vivid photographs that capture its rainbow-colored waters while learning about the science that makes this wonder possible. The book reveals what causes the spring’s intense heat, explains the surprising role of bacteria in forming its brilliant colors, and explores how this natural marvel came to be one of the most celebrated landmarks in the park.

As the story unfolds, children are encouraged to imagine, predict, and ask questions about its history and mystery. They wonder who first discovered the spring, how it got its name, whether it is safe to swim in, and what kinds of plants and animals thrive in and around its steaming waters. A world map helps them locate Yellowstone and compare the distance to their own home, sparking curiosity about geography and travel. Activities and word games help reinforce new discoveries, while creative prompts inspire readers to draw, write, and create personal connections to the Grand Prismatic Spring.

This engaging book reflects the wonder of the Grand Prismatic Spring Collection and provides families with a reason to sit together, step away from screens, and celebrate the beauty of one of nature’s most spectacular creations.

5% of sales go toward Yellowstone Forever, the official nonprofit partner of Yellowstone National Park, dedicated to protecting, preserving, and enhancing the park through education and conservation. From wildlife protection to scientific research, Yellowstone Forever ensures that this natural wonder will inspire future generations.