Journalist Tom Zoellner is back from a rousing trip around the world -- entirely by rail. In his book, "Train: Riding the Rails That Created the Modern World," Zoellner charts the history of the locomotive along the world's most important railways, from the birthplace of the steam engine in Cornwall, England, to the frigid stretches of the Trans-Siberian railroad. We'll talk about his journey and discuss the future of high speed rail.
'Train: Riding the Rails That Created the Modern World'
Tom Zoellner, author of "Train: Riding the Rails That Created the Modern World - from the Trans-Siberian to the Southwest Chief"