In the nineteenth century, railways were viewed as a symbol of progress and confidence in technological modernity. In the twenty-first century, the frustrations of gridlocked traffic, record-high gas prices, and the looming fears of climate change have transformed the railway system once again...

In 1901, the Northern Pacific was an unlikely prize: a twice-bankrupt construction of the federal government, it was a two-bit railroad (literally--five years back, its stock traded for twenty-five cents a share). But it was also a key to connecting eastern markets through Chicago to the rising...