Global Population Crash Isn’t Sci-Fi Anymore (no paywall)
We used to worry about the planet getting too crowded, but there are plenty of downsides to a shrinking humanity as well.
We used to imagine humanity populating the universe. In Isaac Asimov's Foundation (1952), mankind has established a vast multi-planetary empire by the year 47000. "There were nearly twenty-five million inhabited planets in the Galaxy," Asimov wrote. "The population of Trantor [the imperial capital] ... was well ...