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From the post:

>In the late 1980s, NASA was looking for ways to purify the air in its space stations. They conducted a study to find the best plants for filtering toxins and converting carbon dioxide into oxygen. In 1989, their results were published in a clean air study that provided a definitive list of plants that are the most effective at cleaning indoor air.

Archive: https://archive.today/VH4Ue From the post: >>In the late 1980s, NASA was looking for ways to purify the air in its space stations. They conducted a study to find the best plants for filtering toxins and converting carbon dioxide into oxygen. In 1989, their results were published in a clean air study that provided a definitive list of plants that are the most effective at cleaning indoor air.

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I watched that a while ago.

TLDR: houseplants do jack shit. You multiple 50 gallon drums filled with fast growth algae and a sophisticated pumping and lighting system to make enough breathable air for one person.