Larry Niven, Jerry Pournelle, and Michael F. Flynn’s 1991 Fallen Angels is a near-future science fiction novel.
The future! A cabal of feminists, greens, Evangelicals, Luddites, mystics, and Wisconsin dairy farmers has taken control of America, enforcing stringent environmental laws. Without the protective layer of air pollution, Earth rapidly cools. A new ice age dooms most of Canada and the northern US.
The only surviving remnant of American technological prowess is Space Station Freedom. Together with the Russian space station, the stations have declared independence. The habitats cling to life thanks to a small lunar facility and precious nitrogen skimmed from the upper atmosphere.
Having pestered his way into piloting one final skimming mission, Alex MacLeod repays the trust that the community has placed in him by getting himself, the irreplaceable scoopship Piranha, and fellow astronaut Gordon Tanne shot down. Alex manages to land Piranha safely … but the ship will never fly again. What is to become of the two castaways?