When cancer cells grow, they rely on a variety of methods to do so. When one falls through, the cell figures out a new way—often by restructuring how other genes work. In creating the map, researchers are attempting to better understand how cells develop this ability to adapt on command. By understanding it, they can find better ways to stop it. The map they’ve created is a consortium of these adaptations, or what researchers call “dependencies”: what cells depend on for growth and development.