Each year, Builder Magazine teams up with a homebuilder to roll out a cutting-edge "concept home" at the International Builders' Show. While last year's strictly virtual concept home was advertised as "the most innovative home never built," some critics think the 2011 "GreenHouse" might as well not have been built either.

Our new report, Green Building Product Certifications: Getting What You Need, covers every relevant certification in the field. But of course, as we all know, things keep changing. To ensure you have correct and current information, this errata covers all updates, corrections, and clarifications that we know of to date.

When my husband and I attended the first Solar Decathlon in 2002 with our one-year-old and his newborn brother, we (and our massive double stroller) traveled downtown on the subway.