During the second day of the G8 summit, Jose Manuel Barroso, the president of the European Commission, along with heads of state from the United States, Russia, Italy, Britain, Japan, Canada, France, and Germany, participated in a tree-planting ceremony at the Windsor Hotel Toya Resort and Spa in Toyako, Japan. Leaders pledged to cut greenhouse gas emissions at least 50 percent by 2050 during Tuesday's talks.