When Will Humans Live on Mars? [Video]
Earth is the only home we’ve ever known, and it’s treated us well so far. But whether it’s climate change, an apocalyptic asteroid, or some horrifying disaster we don’t even know about yet, the Earth won’t live forever. Luckily for us, we’re in the middle of a new space race—one fueled not by countries trying to plant a flag on the Moon, but by explorers looking to get rich on Mars and beyond. The hope of these entrepreneurs is that in their quest for dollars, we’ll find a way to help humanity settle on new worlds.