Among the things Hansen says must be done – moratorium on all coal fired power plants that do not sequester 100% of CO2, A complete analysis of the polar ice caps, a carbon tax instead of cap and trade. Hansen says: "Before the end of Obama’s first term, we will be seeing new record temperatures. I can promise the president that."
http://www.guardian.co.uk/environment/2009/jan/18/jim-hansen-obama