Today's business landscape is changing in fundamental ways: Natural resources are growing ever more scarce and expensive. Technology and changing consumer expectations are making transparency a fact of life. The rise of emerging economies creates vast market opportunities for companies--and better living standards for hundreds of millions. In Sustainable Excellence, Aron Cramer and Zachary Karabell tell the stories of the companies who are transforming themselves by responding to these paradigm shifts and in the process shaping the future.