"If you want to know where you are, you need a good clock. This surprising connection between time and place has been true for centuries and is now being explored in Time and Navigation: The Untold Story of Getting from Here to There, the companion book to the National Air and Space Museum exhibition of the same name. This beautifully illustrated book covers five major periods of navigation history. The first period, when explorers were navigating...

Overview: In today's world of online maps and travel directions delivered wirelessly to hand-held devices, getting from place to place requires little thought from most of us-which is a good thing, since accurate navigation can be tricky. Get your bearings with Mark Denny-an expert at explaining scientific concepts in non-technical language-in this all-encompassing look at the history and science of navigation. Denny's tour kicks off with key facts...