Dark Ages really more "gray," say economists

In a recent story for NPR's All Things Considered, Madeleine Brand discusses new theories about the Dark Ages, the medieval spice trade, and the Black Plague with Chana Joffe-Walt and Adam Davidson.

Tom Standage, author of An Edible History of Humanity, and Professor Michael McCormick of Harvard join the discussion with a consideration of trade after the fall of the Roman Empire. New studies of rat bones seem to prove that trade was substantial in the Dark Ages, which may need to be renamed the "Gray Ages."