“Now that I’m learning the academic biorhythm, I’m building a course that will clearly have a similar feel to it than that on the blog,” he said. “The students will be conducting an interrogatory look at the key questions of our time on a trajectory toward 9 billion people: how many people are too many, how much nature is not enough, how much poverty is too much? They’ll be looking at those questions and we’ll probably have an online component, either a wiki or a blog that the students will develop each year. But it’s all still kind of TK.”

Indeed, there are many things left “to know,” such as how Dot Earth will fare as an opinion blog, and whether or not readers will find Revkin as relevant a commentator as he was a reporter. Thus far, he has proved to be as dynamic as the rapidly changing media industry itself, but only time will tell.

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Curtis Brainard is the editor of The Observatory, CJR's online critique of science and environment reporting. Follow him on Twitter @cbrainard.