rom the way we communicate....to the way we travel......from the way we entertain ourselves to the way we do business in every aspect of our lives....it is all so radically different from the time of our grandparents. Now, the editors of TIME tell the fascinating stories behind the most important innovations of the past 100 years, from computers, space shuttles, and cell phones, to zippers, Teflon and the Internet. Here is a celebration of ingenuity...