Question: What genre is Living Space?
Answer: science fiction
SF
scifi
sci Fi
sci-Fi
science-fiction
sci fi
sciencefiction

title: Living Space
text: "Living Space" is a science fiction short story by American writer Isaac Asimov.  It was first published in the May 1956  issue of Science Fiction and reprinted in the 1957  collection Earth Is Room Enough.  It concerns itself with a possible consequence of the existence of parallel universes, specifically the ones where life on Earth never developed.

Plot summary
Clarence Rimbro owns the entire planet Earth.  This is no great accomplishment as, thousands of years in