September 28, 2007 10:09 A.M. EDT THE PRESIDENT: Good morning. Thank you. Welcome to the State Department. I'm honored to address this historic meeting on energy security and climate change. And I appreciate you all being here. Energy security and climate change are two of the great challenges of our time. The United States takes these challenges seriously. The world's response will help shape the future of the global economy and the condition of our environment for future generations. The nations in this room have special responsibilities. We represent the world's major economies, we are major users of energy, and we have the resources and knowledge base to develop clean energy technologies.