A technological revolution is sweeping the planet, changing the way the world may run in the future. Floors are being crafted that generate energy when people walk on them. Rooms can tell when people are in them, and power down when they’re empty. Factories are creating electricity seemingly from thin air. The wind that blows across the planet is powering a new breed of skyscraper. Eco-Engineering explores the cutting edge of building big: the latest technological innovations that offer a better way to power our world. Produced by National Geographic.