Andrea are the world’s first “Living Air Purifiers” that clean air through the use of plants. It was invented by Harvard professor, David Edwards, along with French inventor Mathieu Lehanneur. Andrea has already claimed the prestigious award, “Invention of the Year”, by Popular Science Magazine shortly after its exhibit at the MOMA last year in New York. Any kind of household plant can be used, which means ANDREA offers the freedom to select the foliage that best suits the motif of any part of your home. Certain plant species are more effective filtration agents, such as Spathiphyllum (Peace Lily), Dracaena marginita (Madagascar Dragon Tree), Chlorophytum comosum (Spider Plant) and Aloe Vera. Andrea Living Air Purifiers can be purchased at Amazon for $199.99.