The environmental movement's challenge isn't energy, it's power.
Power is what prompts political change. Shifts in power, application of power. Not necessarily power on Capitol Hill, but at least enough power to force Capitol Hill to act. Environmentalists lack the power necessary to effect any major change because there are only a few environmental champions in positions of power in the United States: a few in the private sector, a few in Congress, a very few in the administration, almost no one in the media.
In order to make change, the movement needs to build political power. But instead it's consumed with building energy in an already-energetic base.

As David Roberts notes here and as I've noted before, passion and energy are critical to change. Without passion and a desire to make the status quo snap, nothing happens. But that passion has to exist within the powerful. And right now it doesn't.
Last weekend, tens of thousands of protestors met on the Mall in Washington, D.C., to demand that the president reject the Keystone XL pipeline. Organizers celebrated the turnout, hailing it as the largest climate rally in history.
That may be, but it's certainly not the largest environmental rally in history. On the first Earth Day in 1970, an estimated 1 million people rallied just in New York City, and nearly 20 million across the country. In 2000, a large Earth Day rally in D.C. was mirrored throughout the country. While those were more broadly focused on the environment, they likely matched last weekend’s crowd in energy. And large swaths of every such crowd shared a similar message: Take action to protect the Earth. Only the specifics varied.

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