 Every year, Ravenstahl hosted a giveaway of free trees supported by the Shade Tree Commission, Tree Pittsburgh (formerly Friends of the Pittsburgh Urban Forest), and Eisler Nurseries.Ravenstahl created the tree give away in support of TreeVitalize's goal of planting 20,000 trees by the year 2012.In 2009 the Obama Administration announced that the leaders of the world's largest economies would meet in Pittsburgh for the G20 Summit.