Across the murky waters of Banani Lake from BRAC's headquarters in Dhaka, Bangladesh, lies Korail, one of the country's largest slums, jam-packed with over 40,000 people. I have always seen the slum from a distance, but knew very little about what goes on inside. Typically, slums are illegal land settlements littered with crime, invariable health-hazards and acute poverty. But what I saw recently on my first visit was beyond my expectations.