As digital transformation and tech progress accelerates, it has never been easier to leveraging tech to solve complexe problems: from digital circular fabrication, to low-cost open source prosthetics, drone-based industrial reforestation or artificial intelligence to tackle unemployment. In this keynote, I presented a few areas where tech could help us build a better world, while suggesting some design principles to ensure long-term sustainability, mission alignment, fair value distribution. Slides from a speech I gave at ColaborAmerica 2016 in Rio De Janeiro, on November 18th, 2016.