We really have to look at the interactions between chemicals and the changing indoor air chemistry. That's something we can now do because we have the room-sized chamber.

The chances are very good that it's not the emissions we know about that are really bothering people, but rather the compounds that result when the emitted chemicals react with ozone. That could be quite significant in urban areas like Atlanta that have high levels of ground-level ozone.

There is an emphasis now on developing high-performance schools, and part of that will be to measure how changes in indoor air quality improve the performance of children. By studying how emissions from normal furnishings affect children performing classroom tasks, you can estimate what might happen if you reduce the emissions.