Seems like a really cool mod, would planting plants with other mods make an effect on the atmosphere?

Not as of now, but integrating this is pretty easy. I was thinking that plant recipes could be modified to input co2 and output oxygen

If you have another mod in mind, I could do some adaptions

Arborium would seem to pair well with this goal.

I wonder if you could hack into the pollution numbers. A positive number is of course pollution, but a negative number would be oxygen production?

I tried doing some integration with arborium, trees now convert CO2 to Oxygen, but I could not figure out how to incorporate water into it.

Trees could be a mineable resource instead, but then they will look ugly since trees have their own way of rendering