Here on Earth, we’ve managed to find each other and we’re gradually turning one another’s biggest cities into tourist-infested amusement parks. Consider Barcelona, a city that has more than four times as many annual visitors as actual residents: “Last August, hundreds of residents erupted in spontaneous protest after images of three Italian tourists wandering naked in the neighborhood of La Barceloneta were circulated online. Her greatest worry, Ms. Colau says, is Barcelona’s turning into Venice.” In the NYT, Elizabeth Becker explains why, in many places, there’s a revolt against tourism.