Coming up, next on cspan treasury secretary jack lew talking about the economic effects of Climate Change followed by president obamas recent visit to the u. N. Where he addressed the General Assembly and led a Security Council meeting on foreign terrorist fighters. Good afternoon. On behalf of the hamilton project thank you for joining us this afternoon for a public discussion of the Economic Costs of Climate Change. It is our privilege today to host u. S. Treasury secretary jacob lew who will give remarks on Climate Change and followed by a roundtable discussion between secretary lew and former treasury robert l suching bin and professor of economics at chicago Michael Green stone, before i turn it over to secretary ruben i would like to give a brief introduction to the project, and this is at the brook ings institution is named after Alexander Hamilton the first secretary who laid the foundation for the modern American Economy so its fitting we welcome two u. S. Treasury second secr