The rising levels of outdoor air pollution, spurred by factors like vehicle emissions, fossil fuel burning and industrial exhaust gases, is worrying enough to make you want to stay indoors as much as possible. But surprisingly, even the indoor air isn’t exactly as clean and healthy as we’d like to believe. In fact, according to the U.S. Environmental Protection Agency (EPA), indoor air can often be two to five times more polluted than outdoor air.

Image by Frederik Frydendal from Pixabay

Read more at Forbes…