Global what ???

I got this in an email from an investment advisor:

US Carbon Emissions Plummet  

Coal consumption in the US continued to fall because new supplies of natural gas are displacing coal in power plants. The change has been so dramatic that since 2006, the US has been the world leader in reducing carbon dioxide emissions since natural gas emits less carbon dioxide per unit of power produced. US carbon dioxide emissions have fallen to a 20-year low as a result.

Looks like we'll need some other explanation for global warming and Superstorm Sandy, since it was not USA CO2 emissions.