4.1 billion people in the developing world lack access to sanitation. Of all the MDGs, the access to sanitation is the most off-track. Urban slums, where populations will double to 2 billion people in the next 15 years, are at the epicenter of the sanitation crisis. What can be done? Come share your ideas and learn about the work of Sanergy (http://saner.gy), a young social enterprise which builds healthy prosperous communities in East Africa’s urban slums by making hygienic sanitation affordable and accessible for all.