Jon Kalish Arts & Culture Veteran anti-consumerist crusader Reverend Billy takes aim at climate change Jon Kalish Reverend Billy, the flamboyant "altar-ego" of New York performance artist William Talen, celebrates 20 years of crusading with his Stop Shopping Choir. Listen • 3:46 Science & Technology College Student Uses 3-D Printer To Fix His Crooked Teeth Jon Kalish