Annually, more than a trillion dollars are spent on millions of American nonprofit and government institutions. And 15 nonprofits are started each day. But there is still not significant progress on social issues in the United States. In this audio lecture, sponsored by the Stanford Social Innovation Review, Andrew Wolk, CEO of Root Cause, argues that the time has come for a social impact market—one that fosters innovation and collaboration across the governmental, business, and nonprofit sectors to maximize scarce resources and spread solutions. Wolk believes this cross-sector approach presents our best chance to solve long-term educational, healthcare, environmental, and other problems.