GREENHOUSE AUSTRALIA

Now that Australia's new centre-Left Prime Minister is has pushed climate policy to the top of the national agenda as a convenient mask for his lack of any new ideas, the debate over "Greenhouse" is very lively in Australia. And, thanks to the Murdoch press, skeptical viewpoints are occasionally getting a good airing. Two of the three articles on the subject reproduced below are particularly powerful

Top Australian Greenhouse expert now a skeptic

By David Evans

I DEVOTED six years to carbon accounting, building models for the Australian Greenhouse Office. I am the rocket scientist who wrote the carbon accounting model (FullCAM) that measures Australia's compliance with the Kyoto Protocol, in the land use change and forestry sector. FullCAM models carbon flows in plants, mulch, debris, soils and agricultural products, using inputs such as climate data, plant physiology and satellite data. I've been following the global warming debate closely for years.

When I started that job in 1999 the evidence that carbon emissions caused global warming seemed pretty good: CO2 is a greenhouse gas, the old ice core data, no other suspects. The evidence was not conclusive, but why wait until we were certain when it appeared we needed to act quickly? Soon government and the scientific community were working together and lots of science research jobs were created. We scientists had political support, the ear of government, big budgets, and we felt fairly important and useful (well, I did anyway). It was great. We were working to save the planet.

But since 1999 new evidence has seriously weakened the case that carbon emissions are the main cause of global warming, and by 2007 the evidence was pretty conclusive that carbon played only a minor role and was not the main cause of the recent global warming. As Lord Keynes famously said, "When the facts change, I change my mind. What do you do, sir?" There has not been a public debate about the causes of global warming and most of the public and our decision makers are not aware of the most basic salient facts:

1. The greenhouse signature is missing. We have been looking and measuring for years, and cannot find it. Each possible cause of global warming has a different pattern of where in the planet the warming occurs first and the most. The signature of an increased greenhouse effect is a hot spot about 10km up in the atmosphere over the tropics. We have been measuring the atmosphere for decades using radiosondes: weather balloons with thermometers that radio back the temperature as the balloon ascends through the atmosphere. They show no hot spot. Whatsoever. If there is no hot spot then an increased greenhouse effect is not the cause of global warming. So we know for sure that carbon emissions are not a significant cause of the global warming. If we had found the greenhouse signature then I would be an alarmist again.

When the signature was found to be missing in 2007 (after the latest IPCC report), alarmists objected that maybe the readings of the radiosonde thermometers might not be accurate and maybe the hot spot was there but had gone undetected. Yet hundreds of radiosondes have given the same answer, so statistically it is not possible that they missed the hot spot. Recently the alarmists have suggested we ignore the radiosonde thermometers, but instead take the radiosonde wind measurements, apply a theory about wind shear, and run the results through their computers to estimate the temperatures. They then say that the results show that we cannot rule out the presence of a hot spot. If you believe that you'd believe anything.

2. There is no evidence to support the idea that carbon emissions cause significant global warming. None. There is plenty of evidence that global warming has occurred, and theory suggests that carbon emissions should raise temperatures (though by how much is hotly disputed) but there are no observations by anyone that implicate carbon emissions as a significant cause of the recent global warming.

3. The satellites that measure the world's temperature all say that the warming trend ended in 2001, and that the temperature has dropped about 0.6C in the past year (to the temperature of 1980). Land-based temperature readings are corrupted by the "urban heat island" effect: urban areas encroaching on thermometer stations warm the micro-climate around the thermometer, due to vegetation changes, concrete, cars, houses. Satellite data is the only temperature data we can trust, but it only goes back to 1979. NASA reports only land-based data, and reports a modest warming trend and recent cooling. The other three global temperature records use a mix of satellite and land measurements, or satellite only, and they all show no warming since 2001 and a recent cooling.

4. The new ice cores show that in the past six global warmings over the past half a million years, the temperature rises occurred on average 800 years before the accompanying rise in atmospheric carbon. Which says something important about which was cause and which was effect.

None of these points are controversial. The alarmist scientists agree with them, though they would dispute their relevance. The last point was known and past dispute by 2003, yet Al Gore made his movie in 2005 and presented the ice cores as the sole reason for believing that carbon emissions cause global warming. In any other political context our cynical and experienced press corps would surely have called this dishonest and widely questioned the politician's assertion.

Until now the global warming debate has merely been an academic matter of little interest. Now that it matters, we should debate the causes of global warming. So far that debate has just consisted of a simple sleight of hand: show evidence of global warming, and while the audience is stunned at the implications, simply assert that it is due to carbon emissions. In the minds of the audience, the evidence that global warming has occurred becomes conflated with the alleged cause, and the audience hasn't noticed that the cause was merely asserted, not proved. If there really was any evidence that carbon emissions caused global warming, don't you think we would have heard all about it ad nauseam by now?

The world has spent $50 billion on global warming since 1990, and we have not found any actual evidence that carbon emissions cause global warming. Evidence consists of observations made by someone at some time that supports the idea that carbon emissions cause global warming. Computer models and theoretical calculations are not evidence, they are just theory.

What is going to happen over the next decade as global temperatures continue not to rise? The Labor Government is about to deliberately wreck the economy in order to reduce carbon emissions. If the reasons later turn out to be bogus, the electorate is not going to re-elect a Labor government for a long time. When it comes to light that the carbon scare was known to be bogus in 2008, the ALP is going to be regarded as criminally negligent or ideologically stupid for not having seen through it. And if the Liberals support the general thrust of their actions, they will be seen likewise.

The onus should be on those who want to change things to provide evidence for why the changes are necessary. The Australian public is eventually going to have to be told the evidence anyway, so it might as well be told before wrecking the economy.

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Evidence doesn't bear out alarmist claims of global warming

Andrew Bolt tells Kevin Rudd stuff the Ruddy one does not want to hear. No Leftist wants to have their current best toy taken away from them



THESE are the seven graphs that should make the Rudd Government feel sick. These are the seven graphs that should make you ask: What? Has global warming now stopped? Look for yourself. They show that the world hasn't warmed for a decade, and has even cooled for several years.

Sea ice now isn't melting, but spreading. The seas have not just stopped rising, but started to fall. Nor is the weather getting wilder. Cyclones, as well as tornadoes and hurricanes, aren't increasing and the rain in Australia hasn't stopped falling. What's more, the slight warming we saw over the century until 1998 still makes the world no hotter today than it was 1000 years ago. In fact, it's even a bit cooler. So, dude, where's my global warming?

These graphs should in fact be good news for the Government and all the other warming preachers who warned we were doomed by our gases, which were heating the world to hell. Now Prime Minister Kevin Rudd can at last stop sweating about the warming terrors he told us were coming - the horrific droughts, the dengue fever, the malaria, the devastation to our land and economy. And he can announce that, hey, emergency over for now. His emissions trading scheme will go into deep freeze while he checks this good news.

As for his promise this week to make your power bills go up $200 a year to stop global warming? His promise to make even food more expensive? To put gassy companies out of business, and their workers out of a job? Cancel all that. As you were, soldier. Good news has come from the front.

But now you can see why these graphs terrify Rudd, who has never admitted to a single fact they contain. You think he dares admit he panicked you for no good reason? Wasted countless millions of dollars?

Yet the facts are stark: The world simply isn't warming as he and his pet scientists said. That's why 31,000 other scientists, including world figures such as physicist Prof Freeman Dyson, atmospheric physicist Prof Richard Lindzen and climate scientist Prof Fred Singer, issued a joint letter last month warning governments not to jump on board the global warming bandwagon. "There is no convincing scientific evidence that human release of carbon dioxide, methane, or other greenhouse gases is causing or will, in the foreseeable future, cause catastrophic heating of the earth's atmosphere and disruption of the earth's climate."

That's why Ivar Glaever, who won a Nobel Prize for Physics, this month declared "I am a sceptic", because "we don't really know what the actual effect on the climate is". And it's why the American Physical Society this month said "there is a considerable presence within the scientific community of people who do not agree with the (Intergovernmental Panel on Climate Change) conclusion that anthropogenic CO2 emissions are very probably likely to be primarily responsible for the global warming that has occurred since the Industrial Revolution."

So let me go through my seven graphs that help to explain why even Nobel Prize winners question what Rudd keeps claiming -- that man is warming the world, and dangerously. The main graph is from the Hadley Centre of Britain's Meteorological Office and one of the four bodies measuring world temperature. As you see, since 1998 -- an unusually warm year thanks to the "El Nino" pool of warmer water in the Pacific -- the world's temperature dropped back to a steady plateau, followed by a few years of cooling.

The second graph confirms both the halt in warming, and then cooling. It's from another of those four bodies, the University of Alabama in Huntsville, which monitors the troposphere -- from the ground to 12km altitude. Only one of the four, in fact, claims temperatures are still rising. That's NASA, whose program is run by Dr James Hanson, Al Gore's global warming adviser and a controversial catastrophist whose team's reworking of data has been heavily criticised for exaggerating any heating.

But before I go on, a caveat: This recent cooling doesn't disprove the theory that man is warming the world. Ten years is too short to be sure of a trend. Natural factors may for now be countering the effect of our gases. Then again, the theory that man has warmed the world is based on a rise in temperature over a period that's not much longer -- from just 1975 to 1998. And the computer climate models that scientists use to predict catastrophic warming a century from now somehow never predicted a cooling that's happening right now. And these are the models Rudd is betting on with our jobs and cash.

The third graph shows another surprise those models never predicted: the seas have stopped rising. The waters have crept up for at least 150 years, since the world started to thaw from the Little Ice Age, and well before any likely man-made warming. But the climate models predicted that a big rise in emissions from all those cars, power plants and factories since World War II would cause an equally big rise in the seas, swelling them as much as 59cm by 2100. This wasn't scary enough for alarmists like Al Gore, though, who claimed whole cities could in fact be drowned under 6m of ocean.

But the satellites that have checked sea levels since 1992 find the seas have instead fallen over the past two years. Again, this could be a blip. But it isn't what the models predicted.

The fourth graph seems to confirm a cooling. Forget media scares about a melting North Pole; sea ice has grown so fast in the southern hemisphere there is now more ice in the world than is usual, says the US National Oceanic and Atmospheric Administration.

Graph five punctures another scare. No, global warming hasn't given us more cyclones - or more tornadoes or hurricanes anywhere. Nor is their proof that cyclones are getting worse, says the American Meteorological Society. And warming hasn't stopped our rain, either, despite media hype about a "one-in-a-100 year drought". See the Bureau of Meteorology records in graph six. It's just bad luck that the fickle rain now tends to fall where it's not needed most.

And, please, can we drop that old fiction that the world was never warmer? It's a false claim made popular by a 2001 report of the IPCC, the United Nations' climate group, which ran a graph, shaped like a hockey stick, claiming there was no warming for millennia until humans last century gassed up their world. In fact, that "hockey stick" is now discredited, and last year Dr Craig Loehle, of the US National Council for Air and Stream Improvement, argued that using tree rings to work out past temperatures was clearly unreliable. He instead produced a graph - No. 7 - of past temperatures using all other accepted proxies.

You see his results (which for statistical reasons stop at 1935): they show humans lived through a medieval period that was warmer than even today. This was a period that historical accounts confirm was so warm that Greenland farmers grew crops on land now under snow, and British ones grew grapes.

But I repeat: the world may yet warm again, and soon, although scientists at Leibnitz Institute and Max Planck Institute last month predicted it won't for at least another decade. If at all, say solar experts worried by a lack of sun spots.

But even if none of my graphs disproves the theory that man is causing dangerous warming, they should at least make you pause. They should at least make you open to other theories of climate change, like that of Dr Henrik Svensmark, head of Denmark's Centre for Sun-Climate Research, who thinks changes in cosmic rays, which affect clouds, may explain much of the recent warming. And now the cooling, too.

But, above all, when that man with the sandwich board comes tugging at your sleeve again, shouting, "Quick, help me save the world - or die", hang on to your wallet, friend. Give that urger my seven graphs instead, and ask him how many more years of no warming will it take before he admits it really is too soon to panic.

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Climate policy a blow to Australia's huge natural gas industry

MORE than $60 billion in planned LNG investments are likely to be shelved because the Rudd Government's emissions trading scheme is "backwards" and penalises exports of the clean gas, according to Woodside Petroleum chief Don Voelte. Mr Voelte told The Australian the carbon pollution reduction scheme, unveiled by the Government on Wednesday, would make it impossible for two $30billion West Australian offshore LNG projects to go ahead. "This emissions trading scheme will knock planned projects with relatively high CO2 emissions right off the block - you can start with (Chevron's) Gorgon (project) and (Woodside's) Browse (project) and keep on going," he said.

Mr Voelte said the $15 billion LNG export industry was unlikely to qualify for any free permits under the Government's compensation formula for trade-exposed industries, in part because of efforts the industry had already undertaken to reduce its carbon emissions. He said this outcome was "backwards" because LNG was part of the global solution to climate change, and replaced energy sources at least four times dirtier in the countries to which it was sold.

The LNG industry's concerns came as Kevin Rudd indicated he would try to sideline the Greens and would instead court Brendan Nelson for Senate backing for his carbon emissions trading scheme - dismissing Greens' demands for a phase-out of coal-fired power generation as unrealistic. Labor sources confirmed the Government saw little prospect of winning Greens support for its scheme, which includes plans for compensation for coal-fired power generators. As the Greens attacked the plan and demanded more public investment in renewable energy sources, the Prime Minister called on the Opposition to become "responsible partners" in addressing climate change.

In at least two of a series of interviews he conducted to explain the green paper released on Wednesday, Mr Rudd ignored direct questions about whether he could negotiate for Greens support in the Senate. Instead, he said he wanted Liberal Party backing, without which he would have to rely on the Greens, Family First and independent South Australian senator Nick Xenophon.

The Government has said it will allocate up to 30 per cent of emissions permits to industries with international competitors not exposed to a carbon price, identifying eligible industries through a formula that calculates tonnes of emissions per million dollars in revenue.

Analysis by the Australian Petroleum Production and Exploration Association and by Deutsche Bank experts confirmed Mr Voelte's calculation that LNG would not qualify for permits under the Government's proposed formula. "We do not believe we will be included as an emissions-intensive, trade-exposed industry - that we will fall just below the cut-off, which will mean all the worst emitters will be given a free ride, and clean fuels like LNG will have to bear the whole burden," Mr Voelte said. "We spent hundreds of millions over recent years to clean up our plants, we won all these greenhouse challenge awards. and now we are thinking we should have just left ourselves dirty, because we're going to come in just under the curve. "This emissions trading scheme is going to get the wrong answer - it's going to hit our returns and stop our new projects going forward, when we are part of the global answer." Asked what he intended to do about the problem, Mr Voelte said: "We have booked a lot of plane tickets to Canberra."

APPEA chief executive Belinda Robinson echoed the warning, saying: "Unless LNG receives the treatment it must have, not only is the ability of the industry to grow and invest here ... affected, it will also affect our ability to assist the Asia-Pacific region reduce its greenhouse gas emissions for the longer term."

The Government is also at loggerheads with the Greens over the future of the coal industry in the nation's energy generation. It believes successful deployment of "clean coal" technology - which would ensure the coal industry's future - is vital, and has created a $500million clean coal research fund to commercialise the technology, which eliminates carbon emissions from burning coal by capturing the carbon and storing it underground. But Greens environment spokeswoman Christine Milne told The Australian yesterday her party opposed any public money being spent on clean coal research, and instead wanted investment in renewable energy sources such as solar power.

Senator Milne said average Australians backed her party's position ahead of that of "the greenhouse mafia, the Opposition and (Resources Minister) Martin Ferguson". "The coal industry is largely owned overseas and has made mega-profits from polluting the atmosphere through the commodities boom," Senator Milne said.

As Mr Rudd hit the airwaves yesterday, he made clear he saw little value in attempting to meet the Greens' demands. Asked whether he was prepared to talk to the Greens, he did not even refer to the party. "My appeal is directly to the Liberal Party to ... be responsible partners in the future economic direction of Australia," he told Sydney radio 2UE. "The Liberals have got some serious soul-searching to do on this question in terms of acting responsibly."

In an interview with Sky Television, the Prime Minister was asked about the Greens' criticism, and whether he would stick to his guns in the Senate. He again ignored the Greens, saying: "On the Senate, I think there's going to be a huge national spotlight trained on the Liberals. "Are you going to be responsible partners in this country's long-term economic future or are you just going to walk away and play opportunistic, short-term politics?"

Wayne Swan said government support for clean coal technologies was critical. "As an exporter of coal, we've got a huge interest in developing the technology that captures the carbon," the Treasurer said. The Coalition appeared to be open to negotiations, with Treasury spokesman Malcolm Turnbull stressing that the Opposition was not opposed to emissions trading, although it had differences with the Government on timing. "We have got to see what the measures are," he said. "There is a big issue here about getting it right. This is not an issue, a question, of who is more committed to the environment than anybody else."

However, Mr Turnbull described as absurd the Government's decision to delay the release of Treasury modelling on the ETS until after the date at which submissions closed for comment on the green paper. "You cannot seriously ask people to make submissions about options for an emissions trading scheme when they haven't got any of the financial modelling," he said.

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TURNING THE TABLES ON GREENIE ASSUMPTIONS

Below are three articles showing that Greenie assumptions and policies lead to the opposite of what the all-wise Greenies assume. Initially below is a fuller excerpt of a new paper on atmospheric physics mentioned here briefly a couple of days ago. It shows that, if atmospheric dynamics are fully accounted for, the greenhouse effect leads to global COOLING

Cooling of Atmosphere Due to CO2 Emission

Authors: G. V. Chilingar; L. F. Khilyuk; O. G. Sorokhtin; Rudolf W. Gunnerman

Abstract

The writers investigated the effect of CO2 emission on the temperature of atmosphere. Computations based on the adiabatic theory of greenhouse effect show that increasing CO2 concentration in the atmosphere results in cooling rather than warming of the Earth's atmosphere.

Introduction

Traditional anthropogenic theory of currently observed global warming states that release of carbon dioxide into atmosphere (partially as a result of utilization of fossil fuels) leads to an increase in atmospheric temperature because the molecules of CO2 (and other greenhouse gases) absorb the infrared radiation from the Earth's surface.

This statement is based on the Arrhenius hypothesis, which was never verified (Arrhenius, 1896).The proponents of this theory take into consideration only one component of heat transfer in atmosphere, i.e., radiation. Yet, in the dense Earth's troposphere with the pressure pa > 0.2 atm, the heat from the Earth's surface is mostly transferred by convection (Sorokhtin, 2001a).

According to our estimates, convection accounts for 67%, water vapor condensation in troposphere accounts for 25%, and radiation accounts for about 8% of the total heat transfer from the Earth's surface to troposphere. Thus, convection is the dominant process of heat transfer in troposphere, and all the theories of Earth's atmospheric heating (or cooling) first of all must consider this process of heat (energy)-mass redistribution in atmosphere (Sorokhtin, 2001a, 2001b;Khilyuk and Chilingar, 2003, 2004).

When the temperature of a given mass of air increases, it expands, becomes lighter, and rises. In turn, the denser cooler air of upper layers of troposphere descends and replaces the warmer air of lower layers. This physical system (multiple cells of air convection) acts in the Earth's troposphere like a continuous surface cooler. The cooling effect by air convection can surpass considerably the warming effect of radiation. The most important conclusion from this observation is that the temperature distribution in the troposphere has to be close to adiabatic because the air mass expands and cools while rising and compresses and heats while dropping. This does not necessarily imply that at any particular instant distribution of temperature has to be adiabatic. One should consider some averaged distribution over the time intervals of an order of months. [...]

Energy Sources, January 2008, volume 30, part 1, pages 1-9






More revelations about biofuels -- and other perversities

There is a word that should be in the lexicon of anyone trying to protect the environment. Like schadenfreude, it's one of those German words that has no direct equivalent even in the vast vocabulary of the English language. The word is Verschlimmbesserung - literally a "worse bettering". And as the results of studies published over the last week show, it is all too apt a description of many attempts to "improve" our environment.

Last week a draft report from the World Bank confirmed what many have suspected for some time: that world food prices are being driven upwards largely because of the increasing use of biofuels. Such energy sources have been long been touted as environmentally friendly because, unlike traditional fossil fuels, the carbon released when they are burnt is mopped up by the crops from which they are derived. Encouraged by their governments, farmers around the world have now switched land use to biofuel crops at the expense of food production - with consequences now being felt by consumers around the world.

This is a classic example of a schlimbesserung: a change made with the best of intentions which turns out to have an unwelcome downside. In the case of biofuels, it's far from being the only one. Other research published last week has added to concern that in turning uncultivated land over biofuel crops, the decay and burning of existing vegetation will inject enough carbon into the atmosphere to cancel out any net benefit for centuries.

There are also growing suspicions that current biofuels emit far more of the potent greenhouse gas nitrous oxide than previously thought - so much, in fact, that the fuels may actually boost global warming. According to one recent study, rapeseed biodiesel, which makes up the bulk of biofuel production in Europe, produces up to 70 per cent more warming through the release of nitrous oxide than it cancels out by reduced fossil fuel use.

As if all this wasn't enough, a study by Stanford University suggests such biofuels are also a richer source of ozone, a toxic gas which may boost deaths from asthma and respiratory disease.

Many environmentalists are already calling on governments to rethink their policies and focus on so-called second generation biofuels, extracted from trees and grasses. Yet it's already possible to see another unintended consequence looming. Vegetation such as trees affects the reflectivity of the Earth, and thus its ability to bounce back some of the sun's heat back into space. Covering large swathes of light ground with dark trees could thus lead to more heat being absorbed, boosting temperatures. This effect has been studied in detail by scientists at the US-based Carnegie Institution in Washington DC, who found that only trees planted in equatorial regions are likely to produce a net benefit. Those planted further away - especially in high latitudes, where snow is common - are likely to lead to increased global warming.

The upshot of all this is clear: when it comes to the environment, a little knowledge is a dangerous thing. What isn't at all clear is whether it will ever be possible to have sufficient knowledge to make big environmental policy decisions with any confidence. The signs are not good. Past experience shows that environmentalists are clearly right about one thing: the interconnectedness of nature. But those connections are both ill-understood and exceptionally hard to capture mathematically - making attempts to predict the impact of policy decisions the devil's own job.

Nowhere is this more clear than in the huge effort put into creating computer models of the world's climate. These attempt to capture the incredibly complex interaction of the oceans, land and atmosphere and thus reveal the impact of various scenarios on global temperatures. As anyone who has ever been let down by a weather forecast knows, this is easier said than done. The blame is often put on the so-called Butterfly Effect, whereby even small errors in a computer simulation - caused by the proverbial flap of a butterfly's wings - produces dramatically different outcomes.

In the case of climate models, however, this isn't the real problem. Roughly speaking, the impact of these small errors tends to average out as the models run further into the future. The real problem with computer simulations with the climate is more familiar: "garbage in, garbage out" - or what the experts call model error. In other words, the reliability of such simulation depends crucially on what's fed into them. And in the case of climate models the principal source of such error is held to be how they deal with the effect of clouds. In an ongoing experiment at Oxford University, a climate model is being run repeatedly with different values for the effect of clouds and moisture. Worryingly, early results revealed that the impact on the simulation can be dramatic, with forecasts ranging from a staggering 11.5 deg C increase in global temperatures to a slight cooling.

Now climate modellers may have another, even more important, source of uncertainty to contend with: atmospheric pollution. Research published last week by a team led by Dr Christian Ruckstuhl of the Institute for Atmospheric and Climate Science in Switzerland found that dramatic reductions in industrial pollution achieved by European countries has served to drive temperatures up far more rapidly than by global warming alone. In other words, the clean-up campaigns are another schlimmbesserung, with the airborne gunk actually having a powerful - and beneficial - impact on temperatures, by reflecting the sun's heat back into space.

Dr Ruckstuhl and his colleagues describe the sheer size of the effect as "very surprising". But with no current climate models taking it into account, anyone using computer simulations to guide policy decisions can only hope this latest schlimmbesserung doesn't have consequences best summed up by a short Americanism: "Doh!".

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Economics also shows that Global Warming Policies will have perverse effects

Cap and trade policies ostensibly designed to reduce greenhouse gas emissions could have the opposite effect, says the National Center for Public Policy Research's Justin Danhof in an op-ed published today by the Christian Science Monitor.

That's because of an established principle of behavioral law and economics explaining that when a stigmatized behavior is turned into a commodity that can be bought and sold, that behavior tends to lose the stigma associated with it.

Writing in the Monitor, Danhof describes a social science experiment in which parents were fined if they arrived late to pick up their children from child care. After the fine was imposed, the number of parents arriving late increased, because guilt associated with arriving late had been replaced with the opportunity to buy the right to arrive late, guilt-free. "Parents," says Danhof, "were no longer 'arriving late,' but rather, purchasing extra child-care hours."

Danhof continues: "A similar situation could occur under a cap-and-trade regime. Under cap-and-trade rules, the government places an artificial cap on the amount of carbon each regulated facility may emit. Facilities producing more carbon than they are allowed are required to purchase additional credits to make up the difference. The opportunity to purchase these credits creates a market where none previously existed. As in the example of the fined parents, the purchase of the right to emit greenhouse gases would likely reduce any stigma associated with doing so. Emission levels, consequently, could rise."

Danhof says there are real-world examples of this principle at play in the global warming arena: "Al Gore says the risk of catastrophic global warming is so great that Americans should act immediately to reduce greenhouse-gas emissions. Yet his home uses 20 times more energy than the average American home, according to the Tennessee Center for Policy Research. That's OK, the former vice president assures us, because he purchases offsets to ensure that he lives a carbon-neutral lifestyle... If Mr. Gore could not purchase offsets, would he feel more pressure to reduce his energy use? The likely answer is 'yes.'"

The article goes on to cite works by Santa Fe Institute researcher Samuel Boles and columnist Charles Krauthammer, and to review the results of Europe's cap and trade program before concluding: "The social stigma of carbon emissions grows stronger each day. As this stigma grows, companies are increasing their investments into research and technologies to reduce and store carbon. If Congress removes the stigma associated with these emissions by assigning a price to them, it may not like the results."

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