[dekhn]

It also comes up at least once in John Varley sci fi books. People can get themselves turned into space-floating plants and just sort of hang around saturn. I can't remember if they get genetically modified to photosynthesize or they wear a suit that does it.

[0cf8612b2e1e]

In the novel Old Man’s War, everyone is a green genetically modified super soldier. To reduce potential calorie intake for the troops.

[Charon77]

What about water?