In this exciting series all about discovery, Curious 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, he is introduced to all the beautiful colours 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 PBS show, the story is filled to the brim with additional facts, photos, experiments, activities and more. Learning about science has never been so much fun!