up to 550 parts per million by 2050, my kids' lifetime. And by 
2100 we will be up to 1,280 parts per million taking a worst case 
projection. So however you slice it, we are going to have somewhere 
between a doubling of carbon dioxide and a quadrupling of carbon 
dioxide in the next hundred years compared to pre-industrial times.
  This is bad news for the Earth because we have a system built on a 
climate regime consistent with somewhere around 300 part per million. 
And our crops, where our fish are, wh