Climate Change after Bali (Extended Version)

Do the math: affordable new technologies can allow us to control global warming at modest cost while maintaining global economic growth














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The Bali negotiations will succeed if the world keeps its eye on supporting the speedy adoption of low-emissions technologies in power, automobiles, heating, and carbon sequestration. We could waste years discussing who is to blame and who is to pay for emissions control.  We could endlessly debate the merits of alternative control measures such as tradable permits, taxes, and industrial standards. Yet issues of blame, costs and choice of control mechanisms are less important than rapid technological development and deployment, backed by some form of control mechanism chosen by each country.

If the less polluting technologies pan out at low cost, the rich countries will be able to afford to clean up their own act while also helping the poor make the needed conversions. Climate control is not a morality play. It is mainly a practical and solvable technological challenge, which if met correctly, can be combined with the needs and aspirations for a growing global economy.


ABOUT THE AUTHOR(S)

Jeffrey D. Sachs is director of the Earth Institute at Columbia University.


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  1. 1. Mike F 01:51 AM 2/20/08

    Can we please move past this rubbish about CO2? There is no evidence of any link between atmospheric CO2 concentrations and atmospheric temperature. There is no certain mechanism through which there could be a link. but there is evidence that as atmospheric CO2 concentrations increase its impact as a Greenhouse Gas decrease logarithmically. SciAm is billed as a real Science Magazine, so lets see some real science on Climate.

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  2. 2. hallucinogenic toreador 08:27 PM 2/20/08

    I think you will be waiting a long time for SciAm to abandon in its religiously held beliefs about co2.

    Its just absurd to think that a gas which is almost completely transparent to IR radiation has the largest effect on surface temperature through the mechanism ascribed.

    Oh well, most of the northern hemisphere is in a cooling plunge the likes of which hasn't been seen in a century, and I think its likely a preview of coming attractions given the solar cycle we are entering.

    So much for the warmingists game of global energy production and economic control, I guess. Too bad the sun didn't play along.

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  3. 3. karmody 03:36 PM 2/21/08

    Unless you're a conspiracy theorist, the peer-reviewed work of thousands of scientists done through the IPCC gives our current understanding of the CO2 mechanics. You may not like it, you may not agree, you may say so and that's your right in a democracy. But then you're the one relying on faith.

    Same goes for comments on cooling (refer to the definition of climate vs weather, and to the El Nina cycles)

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  4. 4. Mike F 03:22 AM 2/22/08

    If you are relying on the IPCC scientists, then you have just argued against yourself. IPCC is political not scientific - check their charter. ...and check the political representatives who approve the IPCC reports line by line. While you are at it you might like to closely look at what the actual science is rather than relying on press reports. Do your homework - don't just parrot what you have been told.

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  5. 5. John Burton 08:50 PM 2/22/08

    An excellent article but why did you not include wind power along with nuclear and solar?
    John Burton
    jjj burton@verizon.net

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  6. 6. David Schwartzman 11:44 PM 2/23/08

    Welcome article. But global warming ecocatastrophe may well happen much faster than Sachs assumes, as Jim Hansen has warned us. We may well have only a decade left to implement radical reduction in carbon emissions. As Eisenhower warned us in more than 50 years ago, the military industrial complex is a huge burden on humanity, and "MIC" has grown much bigger in the last 50 years, driven by oil addiction. No war, no warming is the only way to avoid ecocatastrophe and a much more miserable and dangerous world in only a few decades. Building more nuclear power plants contributes to more C emissions until they are completed and diverts resources away from a much cheaper and quicker solution (wind turbines). Better plans for solarization: Arjun Makhijani and Lester Brown.

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  7. 7. Hugh Jones 09:07 AM 2/27/08

    I just read "The Scramble for the Arctic" by Scott Borgerson in Foreign Affairs magazine. It seems seven nations are not only anticipating Global Warming, they're planning on exploiting natural resources, [ including petroleum ], just as soon as the ice melts. After reading about the Permian Extinction etc. why would anyone question the cause & effect of carbon dioxide and methane gas. Denial is an antidote to stress. I read that some Titanic passengers amused themselves for a time by throwing snowballs from some iceberg debris that fell on deck just hours before the ship went down. In the meantime, just follow the money.

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  8. 8. Hugh Jones 07:46 PM 2/27/08

    As a follow on to my previous comment. There seems to be two camps of thought on this subject; the "Believers" and the "Nonbelievers". One camp cites the vacuity of the Scientific Community forever coming up with crisis scenarios based on "lightweight" evidence. If nothing of this magnitude could ever appear in their imaginations, why should they believe in this supposition. The only thing certain about the future is uncertainty, and plenty of people "burned" by the "stock bubble" and "housing boom" learned that the hard way. I weigh in with the "Believers" for no other reason than to do nothing would be tantamount to riding "down with ship" so to speak. What's really bothersome is those that plan to reap in the supposed "treasures" of Global Warming assuming it would reach some equilibrium at that point. Based on paleontologic history we have no idea how far this thing would play out.

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  9. 9. hallucinogenic toreador 04:30 PM 2/28/08

    The entire globe is currently experiencing the most rapid temperature drop on record--nearly 1 degree F over the course of one short year.

    How can anyone still cling to AGW theory, which was derived from computer models, all of which are grossly in error?

    All models predicted a warming troposphere. It is cooler. All models predicted a warmer ocean. It has cooled to depths of 5000m. All models predicted a warmer global surface temperatures. The surface temperatures have dropped significantly very rapidly.

    All this cooling is occur despite increasing co2 concentrations in the atmosphere.

    The solar activity has decreased during the last year by a correlating proportion. Hmmmmm....I wonder if the solar component as a climate driver has been underestimated, while the role of co2 has been greatly overstated in the models?

    The answer is obvious.

    Too bad the sun did not play along with the global socialist energy and economic control scheme they've been planning to enact by blatant lying regarding the impending global warming doomsday scenario.

    The only reason any laypersons would still 'believe' in AGW is because it is a belief that is religious in nature.

    The sun has fully refuted the theory, and invalidated the models supporting it.

    --
    Edited by hallucinogenic toreador at 02/28/2008 9:45 AM

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  10. 10. Hugh Jones 07:10 AM 2/29/08

    Ah, it comes down to religion again. How really simple this now all becomes. Honestly, I really do hope the earth is cooling, my utility bill was horrible last summer. My heart goes out to all those poor politicos that wanted to exploit the Arctic, they'll just have to wait for AGW2!

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  11. 11. hallucinogenic toreador 04:06 PM 2/29/08

    Why would you wish for a cooling climate? Cool periods have been devastating to mankind. Without exception, humans and civilization flourish and advance during warm periods, and by contrast, suffer horribly during cold periods.

    Unfortunately, we are observing that solar activity has declined precipitously over the last year, to levels that should cause everyone concern.

    The religiously held belief by individuals and governemts in anthropogenic global warming via fossil fuels and co2 is deleterious to the plans we should be making to endure a potentially devestating global cool down via reduced solar output.

    Scientific American, the IPCC, and climate modelers should be held accountable when its time to pay the piper.

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  12. 12. Hugh Jones 05:31 PM 2/29/08

    This discourse appears to be heading toward a "Black Hole" my friend, time for me to move on.

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  13. 13. hallucinogenic toreador 08:19 PM 3/3/08

    Well, Hugh, similar to the actions of most global warmingists when presented with the indisputable current observations of a cooling planet which is contrary to the predictions made by the AGW models, you are pulling the equivalent of the classic five year old routine of stuffing index fingers into your earholes while shouting, 'aye, aye, aye, aye, aye!'

    I guess you've picked-up your toys and gone home.

    Why hasn't SA even publised one single article in regards to the rapidly cooling planet in '07/'08?

    The steepest temperature change on record doesn't warrant a mention?

    Come on, now!

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  14. 14. WProthero 05:46 PM 3/8/08

    Folks who claim the Earth is actually cooling are misunderstanding clear data that shows the global average temperature increasing. I personally can't understand this apparent fixation on maintaining a view that conflicts with the data. There are many sources of information that explain this. The data are at:
    http://data.giss.nasa.gov/gistemp/
    If you can't see warming in that data, you are truly hopeless.

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