Two leaders in the growing field of impact investing define this emerging industry for participants on all sides of the funding equation (investors, funders and social entrepreneurs), showcasing compelling examples of success as well as the potential to expand the field to address the most critical social and environmental issues of our day on a scale never seen before. This will be the first book to chart the catalytic path of this new industry, explaining how it is already and can be a positive disruptive force. It will show how impact investing is a transformational vehicle for delivering "blended value" throughout the investment spectrum giving a single name to a set of activities previously silo'ed in enclaves revealing how they are linked within what is becoming a new field of investing. The authors will show how various pioneers are already undertaking impact investments for multiple returns, reveal the power of this new industry and its wide-ranging applications as well as entrepreneurial opportunities it offers. The breakthrough of this book is that it does not take a normative approach to argue how investors should behave like an investment guide might. Instead, it sheds light on how entrepreneurial people and institutions are already offering an integrated alternative. Building on compelling examples, the book will also offer a clear guide to how readers can support the industry's growth and development.