It's a frigid spring day in the outskirts of Catania, Sicily, in Italy. On a narrow highway winding through a landscape of light industry and slumbering vineyards, trucks and Lycra-bound cyclists whiz past a dozen or so sex workers waiting for clients on the side of the road.
Many of the women are from Nigeria. One pair, dressed in matching short, curly wigs, red turtlenecks and fishnets, sit on plastic chairs, listening to a tinny rendition of Celine Dion's "My Heart Will Go On" on a cell phone. Another woman stands alone, hovering close to a fire she's made to keep warm.