Good morning, we open our live coverage of today's UN Climate Change Conference in Paris. Around 150 world leaders will attend the COP 21-Paris 2015, including those of the United States, China, India, and Russia. The summit seeks to end roughly twenty years of international disagreements over reaching a pact that would limit emissions of the greenhouse gases, which are responsible for climate change. 11:00 Two helicopters are hovering overLe Bourget, a commune in the northeastern suburbs of Paris that will host the summit, as world leaders start arriving at the conference center. http://english.ahram.org.eg/News/172148.aspx