Recent research finds that houseplants improve people’s moods as well as provide excellent air purification; not only do they change carbon dixiode into oxygen, they are also able to take toxic chemicals out of the air. While considering plant usage in space bases, NASA specifically found that plants reduce airborne bacteria by 50 to 60 percent. Researchers at Virginia Tech also found that houseplants reduce indoor dust by 20 percent. In addition, plants provide a calming effect, says the US National Gardening Association, and more than one-third of American homes grow plants indoors.
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