You've obviously drunk the Kool-Aid.  Unfortunately you and you fellow science-loving nerds are in the minority and the public has lost interest in Global Warming, Climate Change, Anthropocene or whatever the current buzz word is for the end of times.   ******

Previously you stated climatologists are not qualified to offer opinions economic policy but now you have defend Hansen's lobbying for a carbon tax. If you're going to successfully defend your dissertation you should avoid contradicting yourself when challenged or you will be a pre-doc permanently.