The world isn’t getting any younger. By 2020, people over age 65 will outnumber children under age 5. Humanity faces an urgent question on an unprecedented scale: How do we care for an aging population who can’t work, and harness the contributions of those who can? The Future of Aging is part of What Happens Next, a series of deeply reported short documentaries that examine aspects of life poised to transform radically in the next decades. We’ve spent two years traveling the world to find the people who aren’t simply making predictions about the future, but are already living them out.