Exploring Venus S01 E02 Cloud Cities of Venus

Four billion years ago, Venus held the promise of supporting life. Then it entered a death-spiral of ever-increasing heat. But, 50 km above its desolate surface, the cool cloud tops of Venus offer a potential refuge. Solar-powered ships and habitats could effortlessly float there, sailing the winds that circle the globe. That has inspired scientists to take the first steps toward settling Venus.