Twenty-five years ago, almost no one had a cell phone. Very few of us had digital cameras, and laptop computers belonged only to the very rich. But there is something else—not electronic, but also man-made—that has climbed from the margins of the culture in the 1980s to become a standard accoutrement in upscale neighborhoods across the land: twins.
According to the latest data from the Centers for Disease Control and Prevention the U.S. twin rate has skyrocketed from one pair born out of every 53 live births in 1980 to one out of every 31 births in 2008.
