When does MDF offgas? When the heat is on in the winter or throughout all seasons?

— Rachel Mitchell Rutland, MA

Answered by David Bergman on July 13, 2010

What type of wood products are best to use for green kitchen cabinets?

— Amanda Johnson Bryant Alexandria, VA

Answered by Molly McCabe, AKBD, CGP, CAPS on July 11, 2010

Are engineered stone (quartz) countertops really green?

— susan Fort Lauderdale, FL

Answered by David Edwards PhD on June 5, 2010

Should I be concerned about the radiation that quartz countertops emit?

— saga Fort Lauderdale, FL

Answered by David Edwards PhD on June 2, 2010