>> people in uganda's capital kampala said it was built on seven hills. now it covers more than 20. between the hills are wetland. they host fragile ecosystems and drain water into nearby lake victoria. it's the second-largest lake in the world. as the city gross the wetlands of disappearing fast. they campaign to save them. they have been protected by laws in 1995. he says it's not in force. >> if you look at the policies in uganda, they are the best. when you look at what we are doing, it's a wide range of people, ranging from the capital investors. >> people build ohms on wetlands. it blocks the drainage. rains are heavy.