In this exciting new Curious George series all about discovery, George's city friends Betsy and Steve are taking their first trip to visit him in the country. When a light rain casts a stunning rainbow in the sky, George is introduced to all the beautiful colors of the spectrum! Come along as he chases the rainbow for his pot of gold and learns all about how rainbows occur and even how to create his own. Based on the Emmy-winning PBS show, this story is filled to the brim with additional facts, real photos, experiments, activities, and more. Learning about science has never been so much fun!