As building technologies have improved and new building materials have found their way into construction sites, our homes have certainly become healthier than before... right? Host Kevin O'Connor speaks with professors Jonsara Ruth and Alison Mears, co-founders of the Healthy Materials Lab, a design research lab at Parsons School of Design, about the history of toxic building materials, what we use today that could be harmful to our health, and how we can create healthier built environments.