From a reader auditioning to be my global warming guy (alas that position has many applicants):

Jonah, Ezra tries to equate man-made CO2 with ALL CO2 emmissions. Even the link he provides states that, “Energy-related carbon dioxide emissions, resulting from petroleum and natural gas, represent 82 percent of total U.S. human-made greenhouse gas emissions.” Ezra turns that statement of fact into “Here’s some data breaking down carbon emissions by type: 82% come from fossil fuel combustion. 82%.” That is misleading in that only 3.225% of all CO2 emmissions are man-made. http://www.clearlight.com/~mhieb/WVFossils/greenhouse_data.html That means that 82% of 3.225% of CO2 emmission result from petroleum and natural gas. That’s not so bad considering how much good comes from oil and gas. It sounds like a simple choice with minimal cost and huge benefit.