22/12/2015

Coal Mining's Financial Failures: Two Thirds of World's Production Now Unprofitable

Resilience (Post Carbon Institute) - Sharon Kelly

Image via shutterstock



Sixty-five percent of the world's coal production is unprofitable at today's prices, a new research report by Wood Mackenzie, a commercial intelligence company often cited by investment analysts and the coal industry itself, concluded.
Both major types of coal — the coking coal used for making steel and the thermal coal burned in coal-fired electrical power plants — were included in Wood Mackenzie's analysis. The estimate may be conservative, as the group excluded some costs incurred during mining, and focused primarily on the sharp drop in the price of coal.
Demand for thermal coal is also expected to slump further, in part because coal-fired power plants are expected to be required to meet increasingly strict standards for their emissions of toxic air pollution and greenhouse gasses.
And coking coal, which often sells for more than thermal coal, has been hard hit by the sudden downturn of China's steel industry, which makes roughly half of the world's steel.
A recovery for the steel industry may not come for years, analysts say. "It doesn't help that Chinese steel production is about to see the most dramatic decline to the lowest in 20 years," Herman Hildan, an Oslo-based analyst at Clarksons Platou Securities, told Bloomberg News about the steel industry's prospects. "Demand growth is collapsing."
Prices for some types of coking coal have already plunged more than 75 percent since 2011.
The Wood Mackenzie analysts concluded that now, "more than 65 per cent of world coal production operates at a loss."
The situation is even more grim for some American coal mining regions, like Central Appalachia, where Wood Mackenzie concluded in March that 72 percent of the coal produced was being sold at a loss.
The firm does not expect a turnaround for the coal industry anytime soon.
"We're bearish on 2016," Matt Preston, who manages North American coal research at Wood Mackenzie, told The Billings Gazette.
Utility companies have accumulated unusually large stockpiles of coal this year, according to Platts, which reported in September that stockpiles of some types of coal were 20 percent larger than the 5-year average.
A wave of bankruptcies have swept the coal mining industry, with Patriot Coal, Alpha Resources, and Walter Energy all filing for restructuring in 2015 — though it's worth keeping in mind that simply because a company goes bankrupt, that does not automatically mean that its mines wind up shuttered, but rather that changes in management are underway.
While climate change activists have launched a major movement to divest from fossil fuels, early efforts were seen as more morally motivated than profit driven — but market conditions have shifted and a growing number of analysts say that the fossil fuel industry looks like an increasingly risky gamble for long-term investment.
And awareness of those risks could in turn help spur further divestment.
"There is only a limited amount of investors who can actually integrate the moral imperative into their investment strategy," Sébastien Lépinard, founder of the global investment firm Next World Group told American Prospect. "A lot of the money is managed in a very strict fiduciary manner where it is not about saving the world but making money for clients, trustees, family members."
Overall, fossil fuel divestment efforts have attracted the support of investors in charge of more than $2.5 trillion worth of assets, the research firm Arabella Advisors concluded in September, though the specific commitments vary.
And there's the risk that a shift away from coal could even be damaging for the climate. While coal mining companies are under pressure, Wood Mackenzie sees an upside for another fossil fuel, one that many scientists say is even worse for the climate than coal: natural gas.
"The competitiveness of natural gas is significantly reducing the demand for coal to generate electricity – a market segment that makes up 90% of coal demand in North America," the analysts wrote in a summary of their research. "Natural gas/coal competition will dominate coal market fundamentals in the near-term."
The structure of utility contracts — often signed to cover one or two years' worth of fuel purchases — means that power plants are relatively slow to respond to price shifts. When coal contracts expire next year, utility companies will face vital decisions about how to fuel their operations in the coming year.
"There will be a lot rolling off in 2016 for those utilities with operational flexibility to ramp down their coal burn," Joe Aldina, a New York City-based analyst for Wood Mackenzie, told Platts.
Wood Mackenzie has also predicted that the solar industry could be poised for a breakthrough, one on a scale to match the shale rush that has swept across the U.S. in recent years.
"During our analysis, we identified many evolutionary parallels to shale and believe that solar has the potential to make the same scale of impact across markets," the firm wrote.
Focusing on solar and other renewables would allow investors to avoid the risks of stranded assets and winding up holding reserves of fossil fuels that cannot be extracted and sold without crossing climate thresholds. If the world were to stick to the 2 degree Celsius limit originally negotiated at Kyoto, over $2.2 trillion worth of fossil fuel company assets are at risk, a report this fall by Carbon Tracker concluded.
"Fossil fuel incumbents seem intent on wasting capital trying to hold onto growth by doing what they have always done rather than embracing the energy transition and preserving value by adopting an ex-growth strategy," Anthony Hobley, Carbon Tracker's chief executive said when that report was releasted. "Business history is littered with examples of incumbents who fail to see the transition coming."

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Abbot Point Coal Terminal Expansion Given Approval By Greg Hunt

The Guardian

Federal environment minister gives green light for dredging and disposal of spoil to create one of the world’s largest coal ports, which would be linked to the proposed $16bn Carmichael coalmine
The Abbot Point coal terminal, near Bowen in Queensland, is set to become one of the world’s largest coal ports after being given environmental approval. Photograph: Tom Jefferson/Greenpeace

The federal environment minister, Greg Hunt, has given the green light to expanding the Abbot point coal terminal in northern Queensland, on the condition that the dredge spoils are properly disposed of.
The approval, granted by the Department of Environment on Monday, lists a number of strict conditions that the project must fulfil before going ahead, including how and where the sediment can be moved.
About 1.1m cubic metres of dredge spoil from the project would be dumped in nearby industrial land, rather than in the Great Barrier Reef marine park as originally proposed.
Approving the terminal’s expansion would allow coal from other projects, like Adani’s Carmichael mine, to be shipped for export.
“All dredge material will be placed onshore on existing industrial land. No dredge material will be placed in the World Heritage Area or the Caley Valley Wetlands,” a spokeswoman for Hunt said. “The port area is at least 20kms from any coral reef and no coral reef will be impacted.”
The spokeswoman said any changes to the project lie in the hands of Annastacia Palaszczuk’s government.
“This project was proposed and developed by the Queensland government. Further approvals are required from the Queensland government,” she said.
But conservationists have condemned the decision to let the project go ahead.
“Thousands of tonnes of seafloor will be torn up and dumped next to the internationally significant Caley Valley wetlands. Sea grasses which feed dugongs and turtles will be torn up for the coal industry,” Imogen Zethoven from the Australian Maritime Conservation Society, said. “Hundreds more coal ships will plough through the reef every year.”
Advocacy organisation, 350.org, said the decision makes a mockery of Australia’s pledge at the recent Paris climate conference to limit global warming.
“The Turnbull government can’t seriously sign on to deals which limit climate damage to 2 degrees and then give a green light to massive coal export projects which guarantee that the 2 degree target can never be met,” community campaigner, Moira Williams, said. “The Abbot Point project is a gateway for foreign mining companies to unlock one of the largest stores of climate-wrecking carbon on the planet – the Galilee Basin coal mines.”
“It’s ludicrous that Hunt has given the tick to a project which has no money, no social license, is universally hated, will wreck one of the greatest wonders of the natural world and which has been rejected by most of the world’s largest banks,” Williams said.
“With coal prices at an all time low, support for climate action and protecting the Great Barrier Reef at an all time high, the Turnbull government is treading a dangerous line in approving this climate and reef-wrecking mega coal project. Their actions will come back to bite them at the ballot box next year,” she said.

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21/12/2015

El Niño: State of Emergency

350.org

Intensified by climate change, this El Niño is exceeding previous records and it is on track to unleashing severe and destructive extreme weather in the coming months.



“This El Niño is playing out in uncharted territory. Our planet has altered dramatically because of climate change.” — Michel Jarraud, Secretary-General of the World Meteorological Organization
 Preparation and action is needed now to prevent frightening scenarios of loss and destruction.
One city and five countries have already declared a state of emergency due to the El Niño, while the United Nations has deployed emergency resources to a further 10 countries. The number of places facing a state of emergency is expected to increase considerably in coming months.
This year's El Niño is beginning to expose the dangerous extent of the global warming rapidly accumulating due to human greenhouse gas emissions. Since the last record-breaking El Niño of 1997, a staggering 93% of global warming has been absorbed deep into the oceans.
This El Niño event is now reversing that, with masses of heat energy released from the oceans into the atmosphere. This is effectively speeding up global warming by at least a decade. This has meant that we've now passed one degree of warming since the 1880s.
Continued climate change is likely to increase the frequency and intensity of El Nino events.

Frontlines of El Niño
Papua New Guinea
Months of drought, more than one third of the country going hungry
Since July, more than 100,000 children have been turned away from schools as there’s just not enough water or food left to run them anymore. After a period of severe frosts in the highlands that killed-off staple food crops, the intense El Niño-driven drought has prevented new crops from growing. There have been reports of deaths from starvation and disease.
Arianne Kassman, 350 Papua New Guinea Coordinator: “This crisis shows the importance of addressing the issue of climate change as the survival of our people depends on it. Our people rely on their gardens to survive and now that s being taken away from them. Almost 70% of our people lives in rural areas and rely on subsistence farming to survive.”

Kenya
“All we can do is hope”
Community leader and elders in Ajawa discusion water issues. Photo: Dima CARE

“I grew up in Kisii County, the western part of Kenya. A region that contributes largely to Kenya’s fruit basket, but we too have noticed the absence of rainfall. In the 1970’s my family built a dam within the land my grandfather owned. Though he has departed, that dam has always been there from since I can remember, but in the last two years weather patterns across the country have demanded that our family not take this reservoir for granted. As we experience the second round of drying up, the future remains uncertain. Will the dam refill with rain water as we approach the New Year? Our neighbourhood glares at the skies as if to question where the clouds went. All we can do is hope as we wait for the effects of El Nino to pass.”
— Unelker Maoga

Ethiopia
Worst drought affecting the country in 50 years
Zahara Ali, 9, cooks breakfast in a rural village in Dubti Woreda, Afar Region, Ethiopia. ©UNICEF Ethiopia/2015/Bindra

Ethiopia has plunged into a worsening food crisis as two crop cycles have failed due to the El Niño driven drought gripping the country. The Ethiopian government expects that 10.1 million people will face critical food shortages in the coming year, with 400,000 children at risk of developing acute malnutrition.
“The worst drought in Ethiopia for 50 years is happening right now, with the overall emergency response estimated to cost $1.4 billion,” says John Graham, Save the Children’s country director in Ethiopia.

Chennai, India
El Niño & climate change intensified record breaking floods
Chennai floods. Photo: Wikimedia
The devastating and deadly floods that hit Chennai in early December after 5 weeks of intense deluges were made worse by the El Niño and climate change. In one 24 hour period, the most rain in Chennai’s recorded history fell, washing away aeroplanes at the airport, destroying homes and leaving much of the city without power.

Ecuador, Peru, Bolivia
On alert for severe flooding and erosion
It is estimated that at least 1.5 million people are at risk from flooding in Ecuador alone in the coming months. During the 1997-98 El Niño, Ecuador and Peru experienced rainfall at 10 times the normal intensity, which caused severe flooding, mudslides and damage to infrastructure.

What needs to be done?
Get prepared: It saves lives and a lot of money
Analysis by the World Food Programme of their programs in Niger and Sudan found that responding before disasters hit lowers the cost of a future humanitarian response by a half. Many communities will remember the impacts of the 1997/98 El Niño and are already preparing themselves for the coming months. Different parts of the world are affected differently by the El Niño.

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Climate of Procrastination: The Curse of The Short Attention Span

Independent Australia - Mike Dowson

Unless we keep the pressure on our leaders, claims of progress at the Paris Climate Summit will prove hollow.
(Image via freeimages.com)


It’s interesting to look at the trends in popular opinion about climate change, as measured by surveys.
They appear to have little to do with the accumulating weight of scientific evidence, or the increasing certainty of the modelling. Like global temperature, the percentage of concerned people rises and falls. But unlike global temperature, the long term trend in climate concern in the rich countries has been a decline since the GFC.
The ups and downs seem to coincide in part with dramatic events. A natural disaster like a fire or flood may bring the issue to the fore. Other events, such as an act of terrorism, may have the opposite effect.
After 9/11, Americans, when surveyed, rated terrorism as the biggest threat, with climate change hardly worth a mention. The published data on actual causes of death was much like it is now. The top spots were occupied by illnesses, many of them preventable, as well as accidents and suicide.
Despite the relatively small blip caused by 9/11, you had to drill down a long way into the long term data to find terrorism at all. Some wag at the time pointed out you were slightly more likely to die in the U.S. falling off a bar stool.
Changing levels of "worry" about climate change in the United States. Data points show the extent to which U.S. public survey respondents reported personally worrying about climate change over a 25-year period. (Source: WIREs Clim Change 2015, 6:35-61. doi: 10.1002/wcc.321)
What strikes me about this is how we seem to be predisposed to respond to threats that are sudden and violent, regardless of probability. Threats that are remote or gradual – but nevertheless highly likely – don’t seem to be as important.
It’s not hard to see a possible explanation. We evolved in small groups inhabiting fairly small territories. Even as early human populations spread across the world, the experience of individuals would have been mostly local and personal. Mortal danger existed in the form of predators, illnesses and injuries. Environmental change, on the other hand, was relatively gradual and, as it turns out, may have actually helped to facilitate hominin expansion.
Although we recently began to live in large urban agglomerations, detached from the natural world, our brains evolve slowly. We are wired as if the ancient world is still the one we live in. Even the gargantuan forces that disrupt the modern world – wars, economic shifts, technological changes – don’t seem to concern us very much until we perceive an immediate threat.
If we could switch our perception from human time to geological time, we might see things differently. From earth’s perspective, this is a period of cataclysmic change.
Massive stores of carbon are being wrenched from the ground and pumped into the atmosphere. The forests are disappearing in the blink of an eye. The ice caps are melting. The oceans are turning to acid. Innumerable species are being snuffed out like candles in a storm. A few others – including us, our livestock, parasites, pests and pets – are swarming over the earth like a plague, consuming everything in their path, and spreading toxic waste products everywhere.
It’s not the first time the earth has been rocked by violent upheaval. To an individual trilobite or dinosaur, past apocalypses would have been strangely imperceptible too. Nevertheless, in both cases, the world that had supported their dominance for millions of years was rapidly replaced by one that no longer had room for them.
What is new is that the present mass extinction is directly caused by one species. No one species has ever before held in its hands the fate of so many, including its own.
Although dangerous changes in the biosphere are hard to detect in human time, there are some humans who are constantly confronted by them. In place of our ordinary senses, the scientists who study climate gather vast amounts of data and process it with mathematical models. This enables them to see what is happening from earth’s perspective. Numbers that, to the untrained eye, look harmless, may be alarming to someone who understands their implications.
If a lobbyist, politician, fossil fuel magnate or champion of global capitalism says we have nothing to worry about, it may be tempting to believe. Unless you live on an island with water lapping at your door, or on farmland devastated by persistent drought, you may not notice anything that reinforces what climate scientists have been telling us.
This is not simply a case of competing opinions. The motives behind these messages are entirely different. The carbon kings are protecting their assets and the ideology of extractivism, to quote Naomi Klein.
The measure of their success is personal wealth and power.
The scientists are building models, testing them and refining them. The measure of their success is the accuracy of their predictions.
The rest of us do well to differentiate clearly between these two motives when we choose what to believe about climate change.
The imminent danger for us all, in the fading glare of the Paris Climate Summit, is that we assume the job is done and get back to business as usual. Unless we keep paying attention, that is precisely what will happen. The earth will lose the voice that genuine science has given it and that other voice – the one that never ceases to prattle, the voice of narrow self-interest – will once again dominate. This is the curse of a short attention span.
Unless we can agree and, in fact, collectively demand of those who make big decisions on our behalf, that they do so on the basis of genuine scientific consensus, we are doomed to follow the trilobites and dinosaurs. Climate change is only the beginning.

Has The Climate Change Deal Really Averted Catastrophe?

Al Jazeera

We look at the coverage of the COP21 climate change summit and its framing as a success by the mainstream media.

After years of fruitless negotiations, world leaders finally reached an agreement to combat climate change, agreeing to cap greenhouse gases in an effort to slow down global warming.
Asad Rehman, Friends of the Earth
The United Nations Climate Change Conference in Paris, or COP21, set a target of limiting carbon emissions and keep average temperature increases below 2 degrees Celsius.
The deal, which brought the climate change issue back to the top of the news agenda, was hailed as a success by the mainstream media and self-congratulatory political leaders - who made it sound like a major milestone.
However, climate scientists and activists have since said the agreement has little cause for cheer, falling well short of what is needed to forestall a climate change catastrophe.
They say the deal lacks any legally binding mechanism to hold governments or corporations to emission quotas, while other key issues in the accord are not binding at all.
So why is the deal being framed as a success?
Talking us through the story are: Asad Rehman, a senior campaigner at Friends of the Earth; Catherine Happer, lecturer at the University of Glasgow; Atayi Babs, editor-in-chief at Climate Reporters; and James Painter, the director of the Reuters Journalism Fellowship Programme.

5 Climate And Clean Energy Charts From 2015 You Need To See

ThinkProgress - Joe Romm


CREDIT: Global Carbon Project



This was a big year in climate science and solutions. We learned a number of truly astounding things, which generally makes for great charts.

Clean energy progress
My candidate for the top solutions chart of the year comes from a November DOE report, “Revolution…Now The Future Arrives for Five Clean Energy Technologies.” It shows the stunning progress core clean energy technologies have made in the last several years as accelerated deployment created economies of scale and brought technologies rapidly down the learning curve.
DOE-RevolutionNow
Given that the opponents of climate action are generally shifting from a failed attack on climate science to a demonstrably false attack on the availability of climate solutions, this chart should be front and center in the response.
We also learned this year that, just as the solar photovoltaics crossed a key price point several years ago — which initiated explosive growth in PV nationally and globally — “Electric Car Batteries Just Hit A Key Price Point,” which means electric vehicles are likely to continue their recent exponential growth.

A true emissions plateau?
The runner up for top “good news” chart comes from a Global Carbon Project journal article released earlier this month, “Reaching peak emissions.” The GCP concludes, “Rapid growth in global CO2 emissions from fossil fuels and industry ceased in the past two years, despite continued economic growth. Decreased coal use in China was largely responsible, coupled with slower global growth in petroleum and faster growth in renewables.”
Global Carbon Project graph
CREDIT: Global Carbon Project

Chinese coal consumption has begun a downward spiral, with a more than 4 percent drop expected this year alone (see here). China has been scaling back coal use by power plants as well as by some of China’s biggest industrial coal consumers: cement, steel, and iron.
When you combine China’s accelerated action with the successful Paris Agreement and the ongoing cleantech revolution, it seems clear that 2014-2015 marks an inflection point in the CO2 emissions trend line — and could even represent a true plateau. If so, then you can expect to see a version of this chart in the “top charts of the year” for a while to come.

CO2’s direct impact on cognition
There were plenty of worrisome scientific reports this year, but none more unexpected and more potentially impactful than the landmark public health finding from the Harvard School of Public Health that carbon dioxide (CO2) has a direct and negative impact on human cognition and decision-making. Significantly, these impacts have been observed at CO2 levels that most Americans — and their children — are routinely exposed to today inside classrooms, offices, homes, planes, and cars.
They found that, on average, a typical participant’s cognitive scores dropped 21 percent with a 400 ppm increase in CO2. Here are their astonishing findings for four of the nine cognitive functions scored in a double-blind test of the impact of elevated CO2 levels:
co2charts_1024
The researchers explain, “The largest effects were seen for Crisis Response, Information Usage, and Strategy, all of which are indicators of higher level cognitive function and decision-making.”
The key point is that outdoor CO2 levels are the baseline for indoor levels, which are typically 200 to 300 ppm higher in well ventilated buildings, but far higher than that in poorly ventilated buildings. We are at 400 parts per million (ppm) of CO2 today outdoors globally — and tens of ppm higher in many major cities. We are rising at a rate of 2+ ppm a year, a rate that is accelerating.
Significantly, we do not know the threshold at which CO2 levels begin to measurably impact human cognition, but it appears to be well below 1000 ppm. Even after Paris, we are still on a path to 675 ppm, which is too high for both the climate change impacts and the direct human cognition impacts. Given the importance of this story, I will be reporting on it a great deal in 2016.

No ‘pause’ in global warming
Two more charts merit attention. First, 2015 was the year it finally became obvious there was never any “pause” or “hiatus” in surface temperature warming. Of course, scientists had pointed out that the oceans, where more than 90 percent of human-caused global warming heat goes, have seen an acceleration in warming in recent years. As climate expert John Abraham writes in the Guardian, “The oceans are warming so fast, they keep breaking scientists’ charts.”
But the climate science deniers and some in the media had been trumpeting a supposed slow down in surface air temperatures. That myth was smashed back in January, when Gavin Schmidt, director of NASA’s Goddard Institute of Space Studies, tweeted, “Is there evidence that there is a significant change of trend from 1998? (Spoiler: No.)” He attached this chart:
NASA temperature data
NASA temperature data make clear that not only has there been no “pause” in surface temperature warming in the past decade and a half, there hasn’t even been a significant change in trend.
Now that 2015 is crushing the temperature records set in 2014 — and 2016 may well top 2015 — here’s the question I’ll be following closely next year: Are we in the midst of of the long-awaited jump in global temperatures?

A call for post-Paris action
Finally, in 2015, NASA gave us a chart that was a reminder of why it is so crucial for us to slash carbon pollution, why every nation including ours must keep ratcheting up our CO2 targets every five years as we promised in Paris.
If we don’t keep taking stronger and stronger action on climate change over time, here is what a 2015 NASA study projected the normal climate of North America will look like. The darkest areas have soil moisture comparable to that seen during the 1930s Dust Bowl.
rcp8.5_soilmoisture-1
The greatest danger to humanity this century from human-caused climate change is Dust-Bowlification and the threat to our food supplies. The Paris agreement and the clean energy revolution have given us a serious chance to avert the worst outcomes. We must do everything possible to take advantage of this opportunity.

20/12/2015

Why Climate Skeptics Are Wrong

Scientific American - Michael Shermer

Izhar Cohen

At some point in the history of all scientific theories, only a minority of scientists—or even just one—supported them, before evidence accumulated to the point of general acceptance. The Copernican model, germ theory, the vaccination principle, evolutionary theory, plate tectonics and the big bang theory were all once heretical ideas that became consensus science. How did this happen?
An answer may be found in what 19th-century philosopher of science William Whewell called a "consilience of inductions." For a theory to be accepted, Whewell argued, it must be based on more than one induction—or a single generalization drawn from specific facts. It must have multiple inductions that converge on one another, independently but in conjunction. "Accordingly the cases in which inductions from classes of facts altogether different have thus jumped together," he wrote in his 1840 book The Philosophy of the Inductive Sciences, "belong only to the best established theories which the history of science contains." Call it a "convergence of evidence."
Consensus science is a phrase often heard today in conjunction with anthropogenic global warming (AGW). Is there a consensus on AGW? There is. The tens of thousands of scientists who belong to the American Association for the Advancement of Science, the American Chemical Society, the American Geophysical Union, the American Medical Association, the American Meteorological Society, the American Physical Society, the Geological Society of America, the U.S. National Academy of Sciences and, most notably, the Intergovernmental Panel on Climate Change all concur that AGW is in fact real. Why?
It is not because of the sheer number of scientists. After all, science is not conducted by poll. As Albert Einstein said in response to a 1931 book skeptical of relativity theory entitled 100 Authors against Einstein, "Why 100? If I were wrong, one would have been enough." The answer is that there is a convergence of evidence from multiple lines of inquiry—pollen, tree rings, ice cores, corals, glacial and polar ice-cap melt, sea-level rise, ecological shifts, carbon dioxide increases, the unprecedented rate of temperature increase—that all converge to a singular conclusion. AGW doubters point to the occasional anomaly in a particular data set, as if one incongruity gainsays all the other lines of evidence. But that is not how consilience science works. For AGW skeptics to overturn the consensus, they would need to find flaws with all the lines of supportive evidence and show a consistent convergence of evidence toward a different theory that explains the data. (Creationists have the same problem overturning evolutionary theory.) This they have not done.
A 2013 study published in Environmental Research Letters by Australian researchers John Cook, Dana Nuccitelli and their colleagues examined 11,944 climate paper abstracts published from 1991 to 2011. Of those papers that stated a position on AGW, about 97 percent concluded that climate change is real and caused by humans. What about the remaining 3 percent or so of studies? What if they're right? In a 2015 paper published in Theoretical and Applied Climatology, Rasmus Benestad of the Norwegian Meteorological Institute, Nuccitelli and their colleagues examined the 3 percent and found "a number of methodological flaws and a pattern of common mistakes." That is, instead of the 3 percent of papers converging to a better explanation than that provided by the 97 percent, they failed to converge to anything.
"There is no cohesive, consistent alternative theory to human-caused global warming," Nuccitelli concluded in an August 25, 2015, commentary in the Guardian. "Some blame global warming on the sun, others on orbital cycles of other planets, others on ocean cycles, and so on. There is a 97% expert consensus on a cohesive theory that's overwhelmingly supported by the scientific evidence, but the 2–3% of papers that reject that consensus are all over the map, even contradicting each other. The one thing they seem to have in common is methodological flaws like cherry picking, curve fitting, ignoring inconvenient data, and disregarding known physics." For example, one skeptical paper attributed climate change to lunar or solar cycles, but to make these models work for the 4,000-year period that the authors considered, they had to throw out 6,000 years' worth of earlier data.
Such practices are deceptive and fail to further climate science when exposed by skeptical scrutiny, an integral element to the scientific process.

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