I love, love, love this premise! First of all, I'm a real sucker for any book that takes place in two time periods. What a bonus that one of these time periods is set in the future. The topic of this book is so timely as well. What will our futures be like if we don't take better care of our planet and its resources? We can only speculate, but this kind of literature speaks to me. I look forward to reading about Signe, David, Lou, and their journeys.