Doing something like that at planetary scale is science fiction anyway even if we did have the tech to do it.

> In that sense then the term "terraforming" is on equal footing with alchemy

NASA has proposed using "synthetic biology to take advantage of and improve upon natural perchlorate reducing bacteria. These terrestrial microbes are not directly suitable for off-world use, but their key genes pcrAB and cld...catalyze the reduction of perchlorates to chloride and oxygen" [1].

[1] https://www.nasa.gov/general/detoxifying-mars/

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