Your houseplants look nice, and they might even make you happier, but they’re unlikely to clean the air. (Credit: Anatolii Mikhailov/Shutterstock)

If you go for a walk in the forest, the air feels fresh. People often attribute that to trees’ and plants’ air-purifying abilities. They suck up C02 and exhale oxygen, removing pollutants from the air. So it seems the same should go for the air inside our houses as well.

Humans have tried to bring the forest to their homes for decades, installi