mother in law tongue plan and dracena

Having good indoor air quality is very important, especially since many of us spend so much time inside. NASA did a study to find out which plants were best to filter the air of the space station, and the agency's findings are available to all.

Read on to see which houseplants are best to filter the air (not only producing oxygen from CO2, but also absorbing benzene, formaldehyde and/or trichloroethylene.)

peace lily

You can also see the best plants to filter formaldehyde, xylene and toluene.

spider plant

Here's a Chlorophytum comosum, also known as the spider plant.

All photos: Wikipedia

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This story was originally written for Treehugger. Copyright 2012.