Drew Chafetz, 25, a graduate of the private Maret School with a degree in economics from the University of Colorado, makes no money. He lives with his parents in Northwest Washington, sleeping in the same poster-filled basement room of his teenage years. But Chafetz, despite failure-to-launch appearances, is no slacker. He is actually on an alternative achievement track popular with his generation: social entrepreneurship. Using cheap Internet phone service and free coffee-shop wireless, Chafetz works full time on a project he founded called love.ftbol. The nonprofit organization helps build low-maintenance soccer fields in Guatemalan communities where children often have no place to play except garbage-strewn lots or hard-to-reach fields. Social entrepreneurship, the movement in which people launch nonprofit or business ventures to address systemic problems in impoverished areas, emerged nearly three decades ago and is growing in appeal among young adults who want to help vulnerable people. Rather than working their way up at a government agency or large nonprofit, Chafetz and others in their 20s or early 30s are leveraging business partnerships, grants and donations for their own initiatives to do good in the world. Every generation has its altruists. But many Millennials, born in the late 1970s or early '80s, are displaying a notable urgency to make social change. UCLA's national poll of college freshmen has found that ... about 70 percent of incoming freshmen in 2007 said it's "essential or very important" to help others in difficulty, the highest that figure has been in 36 years.