Traces the development of railways from the first Babylonian rutways to the electromagnetic, driverless trains of the twentieth century, and describes how trains are built and operated.
A photographic essay about flags from countries all over the world and such special flags as signal flags, flags for special festivals and sports, political flags and coats of arms.
Explores the origins of life on earth, why it began in the sea and not on land, how dinosaurs ruled for millions of years, and how mammals and humans took over.
