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350 ppm
By Indy Media /


"The evidence indicates we've aimed too high -- that the safe upper limit for atmospheric CO2 is no more than 350 ppm," says Jim Hansen.

350: That is the level to which Hansen believes we need to reduce the concentration of carbon dioxide (and by implication, other greenhouse gases) in the atmosphere if we want to avoid a series of catastrophic climate tipping points.

The bad news? Atmospheric carbon is already at least 383 ppm, and the rate at which we're spewing greenhouse gases is increasing. In other words, we've seen the credible bar for achieving climate stability drop from 550 to 450 to 350 over roughly the last year. Bill McKibben walks us through the implications:

The difference between 550 and 350 is that the weaning has to happen now, and everywhere. No more passing the buck. The gentle measures bandied about at Bali, themselves way too much for the Bush administration, don't come close. Hansen called for an immediate ban on new coal-fired power plants that don't capture carbon, the phaseout of old coal-fired generators, and a tax on carbon high enough to make sure that we leave tar sands and oil shale in the ground. To use the medical analogy, we're not talking statins to drop your cholesterol; we're talking huge changes in every aspect of your daily life.

Carbon-neutral prosperity is possible. We can design and build a sustainable society within the time we have remaining. The matter hinges entirely on having the will to build it. And that's what's going to be tested now, and big time: our will.

Beyond the political barriers, though, I think there are some habits of mind that impede the gathering of that will.

The first is, as we've said here frequently, the lack of compelling and credible visions of what that society would look like. Without those visions, it is very difficult for any of us to seriously imagine transformational change. As Bucky said, "You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." We need to cultivate a vision of a bright green future that is both bold and beautiful, that goes far enough and offers people better lives.

The second is that we are in overshoot and time is proving to be the strictest planetary limit of all. It's bad enough that with each passing day it becomes more difficult to attain a bright green future -- it's worse to know that things are going to get grim, no matter what we do. We have already committed ourselves to climate chaos, an extinction crisis and mass human suffering -- though what we do now will greatly determine exactly how awful each of those things gets, and if we act now, we can, in fact, still make it through the window of opportunity. To do that we need to be able to read the bad news and still remember that defeatism serves evil here, and in times like these, optimism is a political act. We need to cultivate a politics of optimism.

The third, it seems to me, is perhaps the most difficult: we need to come to understand that this is not a crisis that can be faced or solved on a personal level, and that, to succeed here, we need common action for the common good. We can't shop our way to sustainability; we can't take enough simple steps to get to a one-planet future; we can't save ourselves -- we can only save each other.

This is going to be hardest to accept here in the U.S., where lifestyle environmentalism has been shouted from every rooftop as the answer to our problems. It's going to take much more than a new president to hep Americans come to an understanding that the upper-middle class suburban lifestyle (to which many of us aspire) has become a thing of active evil, and no amount of technofix is going to change that -- we can't just change our lightbulbs and swap our hummers for priuses and call it a day. We're going to have to act together to redesign, reinvent, retrofit and re-engineer nearly every aspect of modern life, and we're going to have to do it in part through regulations, taxes, bans and fees, and we're going to have to do it quickly, and for those unready or unwilling to make the change it's going to hurt.

One the other hand, this moment also offers both the nation and us as people the greatest opportunity for reinvention we've ever had. Our economy is creaking with debt, technologically out-of-date and scandalously dirty, not even vaguely prepared to meet the challenges of 21st century bright green global trade; our political system is ossified with corruption and sedimentary layers of media spin and partisan lies; our suburbs hang suspended on the illusory promise of cheap oil while our cities have been neglected and mismanaged; much of our infrastructure is on the point of collapse; our child care, education and justice systems are the worst in the developed world; our military has been ground to pieces in a war for oil; our health care system no longer serves more than a third of our citizens; our farmlands are blowing away, our forests are burning and our rivers are drying up.

For nearly every one of these problems, there are existing or emerging solutions, and we're coming to realize that most of those solutions support each other in a healthy 21st century society. In holistic, innovative and ambitious answers lies our salvation. We can do this. But our lives won't be the same: this is like a war: whatever plans we had before are going, now, to change. We need to cultivate an awareness that this generation is called to do big things by seeing the big picture, serving the public good and working together.

The crisis we face places stark demands on us, and I can't think of better advice for meeting them than Alasdair Gray's motto, "Work as though you lived in the early days of a better nation."

Written by Alex Steffen
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350 ppm