The Morning After: A History of Emergency Contraception in the United StatesSince 2006, when the "morning after pill" Plan B was first sold over the counter, sales of emergency contraceptives have soared, becoming an $80 million industry in the United States and throughout the Western world. But emergency contraception is nothing new. It has a long and often contentious history as the subject of clashes not only between medical researchers and religious groups, but also between different factions of feminist health advocates.