EPA's new specification for water-efficient homes works well for all sorts of builders and even remodelers Although EPA's criteria for WaterSense labeled new homes were only recently released, custom and production builders from Georgia to Arizona, from Montana to Hawaii, are signing up.

Can insulation materials, which we use to save energy and help prevent climate change, cause greenhouse gas emissions? Yes, in two ways. First, it takes energy to produce and ship these materials--which we refer to as "embodied energy"--and using fossil fuels for these energy needs releases carbon dioxide (our most significant greenhouse gas). So in a sense, all insulation materials have embodied global warming potential (GWP). Second, two of our common insulation materials are made with hydrofluorocarbon (HFC) blowing agents that are very potent greenhouse gases.

Niagara Conservation has introduced a new toilet that's unlike anything on the market. It uses passive "vacuum-assist" technology to deliver a very quiet, effective flush that consumes just 0.8 gallons (3.0 liters)--making it, I believe, the most water-conserving of any flush toilet on the market.

Who knew there would be so many ways to flush a toilet!

Today's op-ed piece in the New York Times presents a remarkably balanced viewpoint on LEED and green building issues. Unfortunately it also has a major blindspot.

First, the good points about the article, "Don't LEED Us Astray" (I love it that even the esteemed Times can't help but get in on not-very-subtle LEED punning). The author, Alec Appelbaum, is perceptive enough to see that LEED may not be to blame for the imperfections of LEED-certified buildings and their performance: