Businesses today need to balance the pursuit of profit with the needs of growing numbers of people on a planet under pressure. While sustainability programs, government action, and nonprofits are all parts of the solution, a growing contingent of forward-looking leaders recognizes the real challenge: a fundamental shift in the nature of commerce. CEOs and other leaders must focus the practice of business on social, environmental, and economic benefitnot only because it will make the world a better place, but because it will ensure lasting profitability and success in the business climate of tomorrow. The Breakthrough Challenge is an inspiring call-to-action and guide for this transformation, based on the work of the B Team, a major initiative uniting leaders in sustainability. As founding members of the B Team, John Elkington and Jochen Zeitz map out their agenda for change. The most important goal for businesses must be redefining the bottom line to account for true l