Although located in dense West Philadelphia, the University of Pennsylvania has a genuine campus—one organized around a series of green spaces and landscaped quadrangles carved out of the surrounding urban fabric.

Like all of us, buildings of a certain age often have problems with their facades.

Lighting accounted for 20 percent of the primary energy use in commercial buildings in 2010—more than either heating or cooling, according to the U.S. Department of Energy.

The scientists and policy experts at the Energy Biosciences Institute (EBI) are tackling some of today's most urgent environmental problems, including climate change and the diminishing supply of fossil fuels.

On Thursday contractors plan to top out a seven-story, 28-unit apartment building known as the Stack on an infill site in Upper Manhattan.

Community service has always been an important part of Gethsemane Lutheran Church's mission.

'It is special and ordinary at the same time,' says architect Annabelle Selldorf while standing on West 20th Street in Manhattan's Chelsea neighborhood.

Architecture need not always be serious. And nowhere is lightheartedness more fitting than in a vacation house.