The science is in: either we go cold turkey on our coal, oil, and gas addictions, or we risk raising the planet's temperature to a level incompatible with the continued existence of civilization.

Economic growth as we have known it is over and done with.

As political theorist Michael Parenti points out, historians often overlook Fascism's economic agenda--the partnership between Big Capital and Big Government--in their analysis of its authoritarian social program. Indeed, according to Bertram Gross in his startlingly prescient Friendly Fascism (1980), it is possible to achieve fascist goals within an ostensibly democratic society.

The idea that we industrialized humans are immune to the natural laws that have restrained growth in other species-and humans in past social regimes-is to me so self-servingly blind as to be morally reprehensible.

If we do nothing, we still get to a post-carbon future, but it will be bleak. However, if we plan the transition, we can have a world that supports robust communities of healthy, creative people and ecosystems with millions of other species.

We are about to enter a new era in which, each year, less net energy will be available to humankind, regardless of our efforts or choices. The only significant choice we will have will be how we adjust to this new regime. That choice - not whether, but how to reduce energy usage and make a transition to renewable alternatives - will have profound ethical and political ramifications.

Today, it is especially difficult for most people to understand our perilous global energy situation precisely because it has never been more important to do so.