Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/g-8-leaders-take-new-steps-to-curb-global-warming Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Transcript As the G-8 summit wrapped up, President Obama and other leaders discussed new goals to limit climate change and assessed the unrest in Iran. Margaret Warner reports from the scene. Read the Full Transcript Notice: Transcripts are machine and human generated and lightly edited for accuracy. They may contain errors. JIM LEHRER: The Group of Eight industrial nations agreed today on a pledge to limit global warming.President Obama joined his fellow leaders in making that commitment at a gathering in Italy. He conceded the worldwide recession is an obstacle, but he said the G-8 made "important strides." U.S. PRESIDENT BARACK OBAMA: I am the first one to acknowledge that progress on this issue will not be easy, and I think that one of the things we're going to have to do is fight the temptation towards cynicism, to feel that the problem is so immense that somehow we cannot make significant strides. It is no small task for 17 leaders to bridge their differences on an issue like climate change. JIM LEHRER: Even so, there were questions about whether other countries will join in limiting greenhouse gas emissions. And the U.N. secretary general, Ban Ki-moon, said even the summit nations fell short.BAN KI-MOON, secretary general, United Nations: The policies that they have stated so far is not enough, it's not sufficient enough to meet the target. We must work according to the science. This is politically and morally imperative and historic responsibility for the leaders, for the future of humanity. JIM LEHRER: The U.N. is pushing to have a new climate change treaty signed in December.Now Jeffrey Brown continues our lead story coverage.