Experts predict that by 2030, roughly 2 billion people around the world will be living in informal settlements - urban communities with poor access to housing, safe water, and city services. It's a sobering statistic, but within these challenging neighborhoods are millions of people with ideas and inspiration. An organization founded by 50 street beggars is now building a brand new town in Kenya. UNICEF is revolutionizing Internet access in Uganda, and a young inventor is designing through dialogue - one street vendor at a time. There's a new water delivery system in Manila, and in Bangladesh a chemist has found a solution to one of the largest mass poisonings in human history. Across continents and cultures, people are designing a future we can all look forward to.