I need to replace my ducts. What type of duct would be best?

— Nadine Findley Concord, CA

Answered by David Lavender on April 25, 2010

What is the safest drywall for our contractor to install? I am concerned about offgassing.

— Steve and Linda Allen Newbury Park, CA

Answered by Karen Smuland on April 24, 2010

What are the top five ways to improve my indoor air quality naturally?

— Janice Levine Denver, CO

Answered by Evan Little on April 8, 2010

Does priming and painting OSB help prevent offgassing?

— Kevin Hanrahan Smyrna, TN

Answered by Amy Green on March 12, 2010

How do I get rid of the chemical smell of vinyl and plastics?

— Cat Vandergrift, PA

Answered by Danny Kelly on March 2, 2010