YC-backed nonprofit that transforms slums into sustainable communities. Todays guest is their founder and CEO, Brett Hagler, He's been on The Pitch and a16z and just wrapped up Getting Goosebumps with Bryan Adams. Brett Hagler is a Y Combinator graduate, former founder of a venture-backed e-commerce company, an author, cancer survivor, and was recently named to the 2016 Forbes 30 Under 30 list.