Dave Dempsey writes:

Bill McKibben always has the most provocative things to say about environmentalism.

Environmentalism isn't dying. In fact, the need for it has never been greater. But it has to transform itself into something so different that the old name really won't apply. It has to be about a new kind of culture, not a new kind of filter; it has to pay as much attention to preachers and sociologists as it does to scientists; it has to care as much about the carrot in the farmers market as it does about the caribou on the Arctic tundra.

Also in the National Geographic article, McKibben writes:

Historians, I think, will look back on this as the time when denial finally began to crumble. When we finally began to understand that the planet as we've known it was at stake-and not from a possible scenario, like nuclear war, but from the consumption of the coal and oil and gas that power most of the actions of our lives. This is new. Humans have never faced a civilization-scale challenge before. Whether we deal with it gracefully or not depends, I believe, on what happens to that creed we call environmentalism.

Read the death of environmentalism? by Dave's Blog
Read the entire National Geographic Voices aritcle, Bill McKibben: A Deeper Shade of Green