There once was a dream of cities in space — vast cylindrical habitats, self-sufficient and populated by millions who would look down on the Earth from their lofty perch. Back in the 1970s, one serious ...

Good news, Earthlings. We have more to look forward to than just the drab landscape of the moon or the inhospitable surface of Mars when it comes to far-flung future human civilizations off this rock.

The real problem with space is there’s not enough of it—at least not when it comes to places to put people. With billionaires funding their own space programs and investors pouring cash into new start ...

Assistant Research Professor. Environmental and Occupational Health, Urban Health Collaborative. Latin America is the second-largest urbanized region in the world, with over 80% of the population ...

Add Yahoo as a preferred source to see more of our stories on Google. There once was a dream of cities in space — vast cylindrical habitats, self-sufficient and populated by millions who would look ...