By the year 2050, more than 60% of the world’s populations will live in cities. Humanity has come a long way since the very first cities began to emerge about ten thousand years ago. Today, cities like New York, Tokyo and Barcelona are centers of innovation and human progress. Urban projects globally are pushing the limits of engineering, design, and agriculture. Meet a few people working on ways to give our urban areas a technological upgrade, planning the connected infrastructures that will support tomorrow's smart cities.