MNN Galleries

G20 Leaders: A who's who gallery

Pittsburgh skyline at night

Photo: Brunkfordbraun/Flickr

1 of 22

G-20 Summit

During the September 2009 G20 summit, international leaders are meeting in Pittsburgh's David L. Lawrence Convention Center — once the largest LEED-certified building in the world — to discuss greenhouse gas emissions, climate change effects and other global issues. Here's a who's who of who's there.