Snake Plant air cleaning house plant
Photo: Martin Olsson
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Snake Plant

(Sansevieria trifasciata)
Also known as mother-in-law's tongue, this sharp-leafed plant thrives in low light. At night it absorbs carbon dioxide and releases oxygen (a reversal of the process most plants undergo). Pot a couple and put them in your bedroom for a slight oxygen boost while you sleep.

How it Helps: In addition to helping lower carbon dioxide, the snake plant rids air of formaldehyde and benzene.
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