Venomous emails poured into climate-change researcher Katharine Hayhoe’s inbox after Rush Limbaugh ridiculed her and Newt Gingrich killed the chapter she had been asked to write for his new environmental book.

The state ranking is based on new, industry-reported data that the EPA said can help communities identify emission sources, assist businesses in tracking emissions and provide information to state and local governments.

One new report: “Following a relatively wet finish to 2011, the return of warm, dry weather to the nation’s southern tier could be suggestive of an increasingly La Niña-driven atmospheric regime.”