When the Covid-19 pandemic forced global lockdowns earlier this year, one positive – if temporary – upside was a reduction in outdoor air pollution. From the US to China, pollution levels dropped significantly. As countries have opened back up, however, pollution levels have rebounded to pre-pandemic levels.
But this focus on outdoor air pollution overlooks a simple fact – most of our exposure to air pollution actually happens indoors. According to the Environmental Protection Agency (EPA), the levels of indoor air pollutants can be two to five times higher than outdoors – and lockdowns exacerbated that even further…read more
