Susan Hayes

Ava rockets into space, where she drops off supplies at the International Space Station and zooms past all the planets in the Solar System.

Noah dives into the ocean and explores a coral reef, a sunken ship, and an iceberg.

When Grandpa Lou's buddy Red challenges the kids to work on his dude ranch, Tommy jumps at the chance to prove himself, and drags the rest of the Rats along with him. Finding ranch work beyond grueling, the kids are about to bail out when they're invited to join a real live cattle drive. As they spend the week learning to rope and ride, Tommy is the only one who finds himself out of his element. While the others easily master new wrangling skills,...