As homes become smaller and more closed off from the outdoors, inventions such as the Biowall by Purdue University are necessary to ensure the welfare of the dweller is not compromised. As noted in the 70s when astronauts got sick in sealed space capsules since the air wasn't being recycled properly, the same can happen even on earth.
The Biowall by Purdue University helps combat this by placing natural air purification system within the walls of the home. Although this greenery might be pleasant to look at, the point is not for added foliage in the home for pure decorative purposes. Instead, these plants absorb airborne toxins to help break them down for the benefit of the residents.
Air Duct Vertical Gardens
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Plastic Bottle Vertical Gardens
Self-Watering Plant Holders
Towering Green Residences
Full Garden Facades
Modular Vertical Gardens
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