This may be a long shot. I'm trying to find a book I read and really liked!
I should probably mention that it was a Kindle book, presumably fairly recently written.
- Was Sci-Fi
- Had a bunch of people (few generations ago?) colonised a planet but limit births due to lack of oxygen
- There's a lot about them going outside in poison atmosphere, and walls becoming transparent for doors, communication etc.
- The main guy is supposed to get married goes out trying to plant in the alien soil, finds a wall around the colony, gets sick, gets out through the wall, and finds other people
turns out, they're still on earth after all
What is the name of this story?