Hop into a time machine and go back to an era before e-mail, iPhones, and electric cars. From our great-grandparents' day to today, a huge evolution and revolution in modes of communication, transportation, and entertainment has taken place. Then & Now teaches kids about the "good old days" when music had to be physically purchased, flying was rare, and messages were hand-delivered—and encourages them to ponder their own technological future. A fun, graduated format clearly shows the transformation of machines through the ages and offers plenty of fun illustrations and facts.