McDonough Braungart Design Chemistry (MDBC) has released a draft of the version two criteria for its Cradle to Cradle (C2C) product certification program. The most significant changes to C2C, which certifies an array of consumer and building products based on MBDC’s environmental philosophy, are a new “Basic” level of certification and... Read more

A report released in June 2007 details plans to move the U.S. House of Representatives to carbon-neutral operation by the end of 2008, to reduce energy consumption in House facilities by 50% from 2006 levels by 2017, and to “make House operations a model of sustainability.” The initiative, headed by Speaker Nancy Pelosi (D–CA) and Majority... Read more

The Royal Institute of British Architects USA (RIBA–USA) has announced the winners of its international design competition “Building a Sustainable World: Life in the Balance.” The competition asked entrants to conceive self-sustaining communities that respond to the challenges of global climate change (see

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Vol. 15, No. 9).... Read more

In July 2007 the New Buildings Institute (NBI) released its Advanced Buildings

Core Performance Guide. The guide describes a series of energy-efficiency measures, selected by NBI using a comprehensive energy-modeling exercise, as the most cost-effective ways to achieve 20%–30% energy savings in buildings throughout the U.S. This guide... Read more

Thank you for your recent article on light bulb bans [see

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Vol. 16, No. 4]. It was well documented and had good points about the value of improving incandescent lamps rather than banning them. Incandescent lamps still have their place in some situations, and it would make no sense to replace every incandescent bulb with a... Read more

The U.S. Green Building Council (USGBC) announced in July 2007 that it had reached a total of 10,000 member companies, signaling large growth in the previous year. The 2007 figure represents a growth of 2,800 members over 2006 numbers; USGBC gained a total of 4,800 members between 2002 and 2006. Member companies include architects,... Read more

Fear of infection is hardly a new phenomenon, but it seems to have risen to a fever pitch in recent years. Modern medicine appeared to have all but conquered infectious disease decades ago—but in the last three decades our society’s confidence in that victory has unraveled. Diseases like AIDS, anthrax, “mad cow disease,” severe acute... Read more

The Western Regional Climate Action Initiative, started in February 2007, continues to grow. Created by five states—Arizona, California, New Mexico, Oregon, and Washington—the alliance grew to include Utah and, recently, the Canadian provinces of British Columbia and Manitoba. The initiative requires the signatory states to work together to... Read more

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Those who remember the 1970s houses with two parallel exterior walls and an airspace between them circulating solar heat around the house may be doing... Read more

At its annual convention in Baltimore, Maryland, in June 2007, the Construction Specifications Institute (CSI) announced its forthcoming GreenFormat product data-reporting tool. GreenFormat is a Web-based questionnaire and product listing service that manufacturers can use to report on environmental aspects of their products. BuildingGreen, Inc... Read more

The Clinton Climate Initiative (CCI) will undertake a global project to encourage retrofitting buildings with energy-efficient technologies, former President Bill Clinton announced in May 2007. The program brings together several energy service companies and banks to help initiate and finance retrofit programs in 15 cities around the world,... Read more

ASTM International has published a new standard for investigations of indoor air quality problems in residential buildings. Standard D-7297 contains guidelines for an initial assessment of possible indoor air quality problems and a subsequent three-phase process for finding the sources of any problems. A first-phase walk through the house is... Read more

I read with interest your article on photoactive titanium dioxide (TiO2) in concrete [see

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Vol. 16, No. 5]. I have been following the product launch for several years, have published articles on the technology, and have spoken about the material at an American Concrete Institute’s nanotechnology conference. My research has... Read more

Members of the U.S. Green Building Council (USGBC) approved a measure that effectively increases the minimum energy performance of LEED-certified projects by 14% for new buildings and 7% for major renovations. Introduced in November 2006, the measure requires all projects to obtain a minimum two out of ten points in the energy optimization... Read more

Both houses of the Connecticut legislature and Governor M. Jodi Rell have approved a bill expanding the state’s ban on pesticide use on school grounds and playing fields. A similar bill, passed in 2005, prohibited the use of pesticides on public and private elementary school grounds starting in 2006, but gave schools until July 2008 to... Read more

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The International Code Council (ICC) and the U.S. Green Building Council (USGBC) have agreed to create a green building educational manual for code... Read more

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Buildings with large expanses of glazing can suffer dramatic cooling energy requirements and create glare problems for occupants. Façade shading systems... Read more

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Underfloor air distribution (UFAD) is an approach to ventilation in commercial and institutional buildings in which conditioned air is distributed... Read more