 Imagine a teeming scrapyard, where people mine electronic waste for recyclable materials. Without formal training, these urban miners teach themselves the workings of electronics by taking them apart and putting them together again. DK Osseo-Asare wondered: What would happen if we built these self-taught techies an amazing makerspace -- where they could make anything they dreamed of? Learn more about this cool community in Accra, Ghana. Watch »  As a tiny child, Mary Maker had to flee her home in South Sudan ahead of a brutal war. She found security and even hope in the school at the Kakuma Refugee Camp. Now a teacher herself, she sees education as an essential tool for rebuilding lives: "For the child of war, an education can turn their tears of loss into a passion for peace." Hear her passionate, unforgettable story. Watch »  When cancer cells are closely packed together in a tumor, they're able to communicate with each other and coordinate their movement throughout the body. What if we could interrupt this process? In this accessible talk about cutting-edge science, Hasini Jayatilaka shares her work on an innovative method to stop cancer cells from communicating -- and halt their fatal ability to spread. Watch »  Can public spaces both respect the past and embrace the future? Landscape architect Walter Hood has explored this question over the course of an iconic career, with projects ranging from Lafayette Square Park in San Francisco to the upcoming International African American Museum in Charleston, South Carolina. In this inspiring talk packed with images of his work, Hood shares the five simple concepts that guide his approach to creating spaces that illuminate our shared memories. Watch »  AI is massively transforming our world, but there's one thing it cannot do: love. In a visionary talk, computer scientist Kai-Fu Lee details how the US and China are driving a deep learning revolution -- and shares a blueprint for how humans can thrive in the age of AI by harnessing compassion and creativity. "AI is serendipity," Lee says. "It is here to liberate us from routine jobs, and it is here to remind us what it is that makes us human." Watch » | 
