I'll start off by saying that I didn't expect to like this book as much as I did! It's a middle-grade book that even adults will enjoy. The story is about a family from the future, time traveling to the past in order to save all of Earth's animals from extinction and to, once again, make Earth habitable for everyone. You can guess that this doesn't happen seamlessly and you would be right. Complete with heroes and a villain, the twists and turns just keep coming. Pease did an excellent job with descriptions of characters and their personalities. This is only the 1st book in the Noah Zarc series and I'm looking forward to reading the next.