Yes, man made global climate change is not going away anytime soon but it will NOT be an extinction level event.  It will however weed out the human popluation based on location & wealth  (most people live near sea level and many of those all vulnerable to severe weather like typhoons/ hurricanes which often will not kill that many people, however the flooding, disease, lack of food and potable drinking water, etc is what will kill thousands.  In Africa, besides violent internal strife, starvation is what kill many thousands.  Best for the US is to CONTINUE to use fossil fuels but be the leaders in alternative energy like photovoltaic & most importantly NUCLEAR energy for power.  The Gore model of paying for carbon credits & making fossil fuel prohibitively expenseive BEFORE the US is ready to go to alternative energies is B S and counterproductive.  & HECO making it expensive for all private homes to go to PV so they can maintain obscene profits is also BS & counterproductive.