2009Nov25: The U.S. pledges a 17% cut in emissions from 2005 levels by 2020, 30% by 2025, 42% by 2030 and 83% by 2050 (BBC).
Reference: BBC http://news.bbc.co.uk/2/hi/americas/8378890.stm
Read the White House press release http://www.whitehouse.gov/the-press-office/president-attend-copenhagen-climate-talks
Image Description: President Barack Obama looks out over the Forbidden City in Beijing, China. November 17, 2009. (Official White House Photo by Pete Souza). Image Location: White House.gov http://www.whitehouse.gov/photos-and-video/photogallery/november-2009-photo-day Image Permission: This file is in the public domain because it was created by a U.S. government employee.