People in the U.S. throw away at least 17 million tons of textiles every year—about 100 pounds of clothing per person. At the same time, unsold blouses, jackets, and other fashion-industry leftovers end up in dumps such as the one in Chile’s Atacama Desert, so vast as to be visible from space. Many of these items are fast fashion—made quickly, sold cheaply, and in style for too short a time because the industry relies on novelty to keep consumers buying.