Many readers will have come across Roger Pielke Jr, a professor of Environmental Studies at the University of Colorado at Boulder. Roger is a political liberal and a firm believer in the theory of anthropogenic global warming. However, because he has had the temerity to suggest that certain parts of the received wisdom of climate alarmists have little substance (such as the idea that there have been massive increases in weather-related damages caused by global warming), he is no longer welcome on the Left. What is most interesting is the way his detractors have gone about his ostracism. Roger describes how the leftist wing of the blogosphere works in some detail here. It is worth everyone's time to read. Some further details on the behavior of two of the principal actors against him, Clinton-era officials Joe Romm and Brad DeLong, are here and here.
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