The amount of information we save, store, and share digitally is growing at a rapid pace. This big data and the sophisticated analytics it enables give us the power to address sustainability challenges in smarter, more informed, and more effective ways. But big data can be costly from an energy and materials use perspective, and raises important questions about privacy, security, and freedom of expression. This one-hour conversation will explore how big data is used by companies and civil society to change behavior and address sustainability challenges as well as what happens if data gets in the wrong hands. How can companies and civil society use it to change behavior and address sustainability challenges? What happens if data gets into the wrong hands? What types of assumptions are made about individuals without their knowing? What special responsibilities arise when business collects big data?