The economic case for installing solar electric panels on your house or place of business is a heavily discussed topic these days. With the green building movement in full force, photovoltaic (PV) systems are becoming more and more popular. In many cases, though, homeowners and small business owners lack the necessary information to make an educated decision on whether to go ahead with a photovoltaic (PV) system installation. In order to make an educated decision on a PV system, the owner must approach the purchase with the return on investment (ROI) in mind.

When describing the changes made to Leadership in Energy and Environmental Design (LEED) for 2009, the U.S. Green Building Council (USGBC) uses the word “harmonization.” According to Marie Coleman, a Communication Associate with the USGBC, this refers to the fact that all LEED commercial rating systems are now aligned on a 100 point scale.

Green roofs mitigate urban heat island effect, control stormwater run-off, reduce sound reflection and transmission, and lower heating and cooling costs, as well as sustain local wildlife. Instead of discussing the benefits of green roofs, we are celebrating the visual appeal of these sustainable works of architecture from around the world. Included are BIG’s 8 House and TED Cube Building; Renzo Piano’s California Academy of Sciences; the Nanyang Technological University School of Art, Design, and Media; Vector Architects’ Green Technology Showroom; the OUTrial House by Robert Konieczny of KWK Promes; and Zaha Hadid’s Dongdaemun Design Park and Plaza.

The earthquake in Haiti that hit on January 12, now seven months ago, left more than 230,000 people dead with 1.3 million homeless and 600,000 internally displaced. Undaunted not only by the immediate devastation of the quake but also by the political and governmental fragility that makes reconstruction difficult, Clemson School of Architecture Associate Professor Doug Hecker and Assistant Professor Martha Skinner continue to work to provide housing for Haitians long after they began an immediate post-quake creative search for emergency shelter for the displaced and homeless in Haiti. Their efforts resulted in the successful use of shipping containers as emergency housing -- the SEED_Haiti project.

As our world becomes more urbanized, and our cities continue to grow, we are replacing the natural environment with buildings, pavement, and asphalt. This causes a phenomenon called urban heat island effect, in which the proximity of urban buildings makes cities several degrees warmer than rural areas. We are starting to realize that we need to counteract this harmful effect and that cooling the roof is one of the best ways of doing so. Many roofing options will accomplish the goal of combating urban heat island effect, including reflective roofs and roof gardens.

There are two common sayings about Madrid -- “Madrid me mata” (Madrid kills me) and “De Madrid al cielo” (from Madrid to heaven). Both adages are appropriate ways to describe Madrid’s polarization between the calm and the chaotic. From the city’s breakneck traffic to its streets filled with animated Madrileños, rosemary-laden gypsies, and gawking tourists, the city of Madrid moves at a nauseating rhythm. But somewhere, deep within this traditional chaos, it’s possible to find hidden corners of both modernization and tranquility. Strolling along the Paseo de Prado’s tree-lined avenue, you will come across Patrick Blanc’s vertical garden lurking in one of these corners.

For more than ten years now the United States Green Building Council (USGBC) has been transforming the way we build through its Leadership in Energy and Environmental Design (LEED) rating system. This transformation has been driven by local, state, and federal government, as well as institutions. However, the past two years have seen an increasing number of private LEED projects; this trend has sparked interest in the return on investment (ROI) of LEED certification.

Third-party verification, the basic concept at the heart of the Leadership in Energy and Environmental Design (LEED) program, is both its greatest strength and its greatest burden. The U.S. Green Building Council (USGBC) has long struggled to establish a practical system in which a series of independent verifiers work seamlessly together to achieve building certification.

The U.S. Green Building Council’s (USGBC's) Leadership in Energy and Environmental Design (LEED) program is the nation’s leading standards-based green building program. In 2009 the USGBC released its most recent version of the rating system and embarked upon its latest stage of development.

The Bertschi School, an independent elementary school in Seattle, Washington, has a history of emphasizing sustainability. In 2007, it was the first school in the state to have an elementary classroom building awarded LEED Gold certification. Now, with a new 1,425 sq. ft. science classroom scheduled for completion in November, the school is attempting to comply with an even more stringent green building rating system, the Cascadia Region Green Building Council’s Living Building Challenge.

The number of green design materials available has exploded in recent years. Products that used to be offered in limited colors or designs are now as varied as their traditional counterparts. Because of consumer demand, sustainable painting, flooring, and countertop products that might have been less durable and expensive in the past are now stronger, longer-lasting, and often more affordable.

Most of the residential architecture in coastal Landskrona, Sweden, is quaint and unassumingly beautiful. For a long time there was an empty lot only a bit wider than two dozen feet on a dense street in the center of town. One day, a stark white townhouse appeared on the block, boasting elegant geometrical proportions and a transparency that commands a place in the heart of art and architecture enthusiasts. What happens to a traditional streetscape when distinctly different, yet equally gorgeous, architectural styles are juxtaposed? Jonas Elding and Johan Oscarson of Elding Oscarson architecture of Sweden wish to reveal a few of their design secrets.