Digging on YouTube to find a good video explaining Corporate Social Responsiblity (CSR) I just found this interesting video from the World Business Council on Sustainable Development (WBCSD). It showcases businesses that try to find win-win situations where making business can address some of the world most pressing issues such as the water crisis. It follows the thinking of Prahalad's "Fortune at the Bottom of the Pyramid".
What I like most is the example of Procter and Gamble (at around 4:30min) who offers a product that purifies water in developing countries to make it suitable for drinking and therefore avoids diseases and saves lives:
