Where can I learn more about professional (or semi-professional) equipment for testing the levels of indoor air toxins like carbon monoxide, radon, mold, VOCs, etc.? Here's a Talk of the Nation show that addresses the need, if it helps.
posted on Feb 18, 2008 - 8 answers

How can I reduce CO2 levels in my house? [more inside]
posted on Feb 14, 2007 - 11 answers

Air Quality @ Work and migranes - What to do if I think there might be a problem? [more inside]
posted on Oct 5, 2006 - 7 answers

Why is it that when I sleep with an open window at night, I wake up way more energized? [more inside]
posted on Feb 15, 2006 - 23 answers

I love having fires in my fireplace. But I hate the fact that it makes my apartment smell like smoke for weeks afterwards. [mi]
posted on Sep 22, 2004 - 12 answers