If you’ve been following the news at all lately, you’re probably aware that this fall’s G-20 summit begins tonight in Pittsburgh.You may also be aware that there was some surprise when President Obama announced that the Steel City would host the meeting. Obama has said that he wanted to highlight Pittsburgh’s success in transforming itself from an industrial center to a hub of higher education and green technology. He could have added that the city’s David L. Lawrence Convention Center, built by Rafael Viñoly Architects in 2003, is an excellent venue for an agenda that includes addressing climate change (even if, obviously, the financial crisis will be the main issue on the table). The DLLCC was the first, and is the still the largest, LEED Gold convention center in the country. It was built on a former brownfield using a high percentage of local or recycled materials, equipped with an on-site water-reclamation plant, and designed for an abundance of natural lighting and natural ventilation, among other green moves. Maybe, if we’re lucky, the G20 leaders will be inspired by its environmental performance to phase out those pesky fuel subsidies that are hindering efforts to cut down on worldwide carbon emissions.