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I read about a passive recirculating system using a purpose-built valve for a second-story bath. Will this work on a single story?

— Glann Perry

Answered by Polly Osborne, FAIA, LEED AP on March 22, 2010

Which is a more sustainable choice: hardwood mulch or rock?

— Julia Tullahoma, TN

Answered by Aaron Roy Coffeen on March 18, 2010

We have a 400-foot driveway. Can you suggest a permeable or semi-permeable topping?

— Susan Zona Jacksonville, FL

Answered by Christian Kienapfel | AIA Architect | RA | LEED AP | Dipl.-Ing. Architekt (Germany) on March 18, 2010

What is a good drought-tolerant turf suitable for the Denver, CO area?

— Cameron P Kruger AIA Denver, CO

Answered by Aaron Roy Coffeen on March 15, 2010

Can you suggest eco-friendly materials for a sand fence on our beachfront property?

— Cindy Miller Milford, DE

Answered by Richard Heller on March 9, 2010

I'm interested in planting bamboo in my yard. How can I keep it from spreading?

— Joel Karns

Answered by Richard Heller on January 25, 2010

I’d like to know more about on-site wastewater treatment and green roofs in NYC. Can you help?

— Cesar Yoc, New York, NY

Answered by Paul Gleicher on June 12, 2009

We’re trying to figure out what type of wood to use for an outdoor deck. Any advice?

— Melissa Carlson, Boston, MA

Answered by Jim Zack on April 9, 2009

How can I create a permeable pathway for my water-wise garden?

— Stan Brody, Upland, CA

Answered by Richard Heller on March 20, 2009

Is there an eco-friendly way to get rid of the poison ivy and sumac on our property?

— Jacqueline Downing, Maysville, NC

Answered by Richard Heller on March 20, 2009

 
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