Our World Transformed - Readers Digest Author:Reader's Digest Ever wonder why roller coasters don't fall off their tracks? Why cats have a third eyelid? Or how e-mail works? Inquiring minds want to know, and all the answers are here in this highly browsable, fact-filled book.From controversies such as the genetic modification of food to new information on the shape of the universe, you'll find the experts'... more » responses to your most pressing questions about time, space, technology, living things, and more.Not simply a reference book, "Our World Transformed" is based in the reader's own experience and draws their attention to new ideas they may only have heard in passing.« less