Now even the youngest children can enjoy learning about the world around them. Hello, World! is a new series designed to help parents introduce simple nonfiction concepts to their babies and toddlers.   Narrated in an easy, friendly tone (“Look out the window. What is the weather like today?”) and featuring bright, cheerful illustrations, Hello, World! makes learning easy for young children. Each page offers helpful prompts for engaging with your child.   Weather takes children through the seasonal changes in a backyard, allowing them to see how the yard changes throughout the year: on a summer day the flowers are bright and a puppy plays on the green lawn; on a snowy day we see the same yard blanketed with snow; on a windy day the clothesline flaps in the breeze. Children can also have fun pointing to pictures of the different clothing we wear in each type of weather: mittens, hats, rain boots, and more. It’s a perfect way to bring natural science into the busy world of a toddler, where learning never stops.