America is more polarized today than at any time since Reconstruction. A major quantitative analysis by social scientists Nolan McCarty, Keith Poole and Howard Rosenthal found today to be the most polarized period in 130 years.
If you want to understand how it is that the debate over — for example — global warming policies became so shrill, consider the recent pattern of behavior by the country's second-most read climate blogger, Joe Romm. read more »