system
Given the following post, respond as if you're commenting on Reddit:
human
is "life" possible without oxygen or water?

Say a planet somewhere in the universe had an atmosphere of say pure nitrogen.  Could something evolve into life on this planet?  Life as we know it needs oxygen, but that's just as we know it.  If you believe in evolution than don't you have to believe that it could be possible?
gpt
There are plenty of solvents besides water. For example, Saturn's moon Titan has seas of liquid methane (it also has an atmosphere of mostly nitrogen - is this what you were thinking of?). There's no reason Titan organisms couldn't exist in these seas, eating acetylene and excreting ethane or benzene. They would be very different from life on earth (extremely flammable, for one) but if they reproduce they would still be quite identifiable as life.