That's what Atlantic tech blogger Alexis Madrigal calls Google's Books Ngram Viewer. Google has scanned about 10 percent of all the books ever published. Enter any word or phrase into the search box, and the viewer returns a graph of its frequency of appearance in books published over the last two centuries. Note that the searches are case sensitive, and you can compare the relative frequencies of up to four five different words or phrases, separating them by commas in the search box. Say, "Nova Scotia" and "Ontario," for example: Try it yourself, and please send me any interesting pairings you come up with. Madrigal's...

At the Valley Motel, somewhere east of Manistique, on Michigan's Northern Peninsula, the peripatetic Jane Kansas talked Dave, the proprietor, into a cut rate of $30 for this beauty. Later, Dave and his twin daughters showed up with a dinner of steak, real fries, shrimp, rice, cheese, and olives. "We thought on your walk you might not get many home cooked meals," Dave explained. Before bedtime, the girls returned with a banana and a doughnut for dessert. To the people Jane encounters on her epic walk across the American Midwest, she must seem the oddest of strangers: a short, sunburned woman in late middle age,...