Climate Debate Daily

CLIMATEDEBATEDAILY.COM Archive 2010 Return to Main Page

Calls to action


Essays and research supporting the idea that global warming poses a clear threat to humanity, that it is largely caused by human activity, and that solutions to the problems of climate change lie within human reach.

If you didn't know much about climate science then The Hockey Stick Illusion might persuade you that it's nothing but a massive conspiracy ...continue »  [more]

The current top 10 hottest years, in descending order, are: 2005, 2007, 2009, 1998, 2002, 2003, 2006, 2004, 2001 and 2008. Hot is the new normal ...continue »  [more]

A withering heat wave of unprecedented intensity has brought the hottest temps in recorded history to 9 countries, making 2010 the year with the most heat records ...continue »

High ocean temps this year are being blamed for a severe bleaching event that's killing corals across the tropics and has the potential to be the worst on record ...continue »

Like the proverbial slow-boiling frog, we seem unable to rouse ourselves as once-mighty glaciers retreat and die before our eyes ...continue »  [more]

Decisions made today about CO2 will influence climate not just for decades but for centuries and perhaps millennia, says the National Academy of Sciences ...continue »  [report]

June 2010 was the warmest June ever recorded. It joins March, April and May in the record books. The 20th century average has now been exceeded 304 months in a row ...continue »  [more 1]  [2]

Why, when it's obvious that men like Monckton, Morner and Taylor have serious issues with reality, are so many people prepared to follow them? ...continue »  [more 1]  [2]  [& Morano]

With CO2 levels close to our own, the Arctic of the Pliocene epoch may have warmed much more than previously thought – and the modern Arctic could go the same way ...continue »  [more]

The fate of the polar bears of Hudson Bay is inextricably bound up with that of the sea ice. Several more years like this one would wipe the population out ...continue »

At a time when the recent minimum of solar irradiance is having its maximum cooling effect, the Earth just had its hottest January – June in NASA's temp record ...continue »

It's odd how little we've heard lately from the skeptics who deny that climate change is real. What's the matter, people? Heat stroke? ...continue »  [more 1]  [2]  [3]

Changing ocean chemistry could turn some fish species into easy meals, with senses of smell so scrambled they're actually attracted to their predators ...continue »  [more]  [and crocs]

The official UK inquiry into the climategate affair has found that the "rigour and honesty of the scientists involved are not in doubt" ...continue »  [more 1]  [2]  [3]  [Report]

The surest sign of a warming Earth is the steady melting of its ice zones. An impressive array of sophisticated satellites track these changes ...continue »  [& sea ice in June]

How precisely does the greenhouse effect work? The scientists at RealClimate have done their best to summarize the basic physics behind it ...continue »

When it comes to sea ice, especially in the arctic, the stooges have been busy. But measurements of sea ice draft made by submarines tell the true story ...continue »  [more]

It is hard to overstate the irresponsibility of those who misrepresent climate science in order to persuade people that no action needs to be taken ...continue »

The disaster in the gulf is no anomaly. It's an arrow pointing toward future nightmares as oil is extracted from ever deeper and more hazardous locations ...continue »

While many of the details have yet to be settled, the big picture emerging from studies of past climate couldn't be clearer: CO2 is in the driver's seat ...continue »

A lie can get halfway around the world while the truth is still putting its boots on, and nowhere has that been more true than in the case of "climategate" ...continue »  [more]

An Ellesmere Island fossil site has shed startling new light on how warm the Arctic was 4 million years ago - and just how hot it could get in the coming decades ...continue »

The Skeptics Handbook purports to deal several "knockout blows" to the theory of human caused global warming. But do they stack up? ...Part I » Part II » Part III » [riposte]  [reply]

It is a distressing sight but, one we will have to get used to: most of the world's prominent climate change deniers skewered on their own sword ...continue »

When the most powerful country on earth can't stop a single leaking pipe, is it really clear that we'll adapt to rising sea levels and super-charged hurricanes? ...continue »

If only 39 out of every 100,000 molecules are CO2, how can they heat all the rest of the air? Roy Spencer may be a climate skeptic, but he has the answer ...continue »

Whether Arctic sea ice extent sets a new record low this year will depend on the weather, but the decline so far has been remarkable ...continue »  [more 1]  [2]  [graph]  [graph]

A new study reveals that 97% of active climate researchers support the theory of anthropogenic climate change. A consensus, no? ...continue »  [more 1]  [2]  [Study]

A newspaper has at last apologized for a bogus story that was cited 20,000 times on the web and produced the so-called "Amazongate" non-scandal ...continue »  [more]

Our ever-increasing carbon emissions are acidifying the ocean in a grand planetary experiment that could have devastating impacts ...continue »  [more]  [riposte]  [reply]

A climate and energy bill being pushed in the Senate would cost American households 22 to 40 cents a day – less than the cost of a first-class postage stamp ...continue »  [more]

Driven by unusually hot weather, Arctic Ocean ice cover retreated faster last month than in any previous May since satellite monitoring began more than 30 years ago ...continue »  [graph]  [riposte]

According to NOAA, May 2010 was the hottest May on record globally, over land, and over the northern hemisphere. It was the second hottest May in the southern hemisphere ...continue »

The increasing length of the ice-free season on Hudson Bay will soon reach a tipping point where 20% to 30% of Manitoba's polar bears will begin dying off every year ...continue »

The Arctic is losing 70,000 square kilometres of sea ice every year. That adds up to 2.5 million square kilometres over the last 30 years. The reality is even worse ...continue »  [more]

They may have got climate skeptics steamed up, but the "climategate" emails haven't influenced US public opinion about global warming much ...continue »  [and in the UK]

Last month tied with May 1998 as the hottest May in the NASA dataset, and the January – May period is easily the hottest such period ever yet recorded ...continue »

In the past industry and free-market advocates joined forces to undermine tobacco research. Now they're doing it again with global warming ...continue »  [more 1]  [2]  [3]

Those who do battle with climate change deniers can't inflict one tenth as much damage to their cause that Lord Monckton wreaks every time he opens his mouth ...continue »  [more]

A new study from the International Energy Agency reveals that global subsidies to dirty fossil-fuel energy total $550 billion a year – 75% more than previously thought ...continue »  [more]

The satellite data from last month are in. Average global temperatures were the second warmest for any May in the record, and the ninth warmest for any month ...continue »  [more]  [graph]

No matter how overwhelmingly the scientific community back a research study, naysayers can always find a scientist willing to support the opposing view ...continue »

Every so often, someone with a strong stomach devotes weeks of their life to a grisly task: investigating the claims of a climate skeptic like Viscount Monckton ...continue »  [more 1]  [2]

New data from some of the world's leading climate researchers suggest that 2010 is shaping up to be one of the warmest years ever recorded ...continue »  [more]  [riposte]

Global warming isn't happening and, if it is, the world will be better off. Or at least, so says Christopher Monckton. John Abraham thought he'd do some digging ...continue »

Many of the thermometers that feed into the surface temperature record are located at airports. Does this produce a false warming signal? The answer is surprising ...continue »

Between 1950 and 1980 only 50% of the glaciers in the Tibetan region were in a state of recession. During the early part of this century that figure rose to 95% ...continue »

Ocean acidification has lowered the pH of seawater by 30% so far. The acidity soaks up carbonate ions which marine organisms need for their shells and skeletons ...continue »

It's reasonable to be skeptical about specific predictions of future climate, especially after 2030, but that should not blind us to what is happening to our planet now ...continue »

How do we know what caused climate to change – or even if anything did? It's not just a matter of spotting correlations or "unprecedented" changes ...continue »

Global temps, averaged over the past 12 months, were the warmest for 130 years, and 2010 could turn out to be the warmest year in recorded history ...continue »

There was an unexpected anti-climax at the world's biggest gathering of climate sceptics when Steve McIntyre counseled against harassing climategate e-mailers ...continue »  [more]

At last we understand why the monstrous ice sheets that periodically entomb continents vanish when they do. The mechanism involves ocean currents and CO2 ...continue »  [more]

Scott Luthcke weighs Greenland. Its been losing an average of 183 gigatons, or 200 cubic kilometers, of ice annually during the past six years ...continue »  [more]  [riposte]  [reply]

80% or 90% of the heat absorbed by the planet goes into the oceans, and new research confirms the oceans have been warming inexorably since at least 1993 ...continue »  [more 1]  [2]

A summary of climate science by America's top scientific body says the core hypotheses have stood firm in the face of careful evaluation of other explanations ...continue »  [more 1]  [2]

A climate sceptic is willing to follow the facts wherever they lead, while a climate denier has a position staked out in advance ...continue »  [more 1]  [2]  [3]  [4]  [5]

NOAA has confirmed that last month had the warmest average global temps ever recorded in the month of April, and the warmest ocean surface temps too ...continue »  [more 1]  [2]  [3]

April was easily the warmest April in the 130 year NASA temp record, and so far 2010 is the hottest year. This despite the recent deep solar minimum ...continue »  [more]

Levels of low cloud depend on relative humidity, which is powerfully influenced by evaporation from plants. It turns out that that depends in turn on CO2 levels ...continue »

Bye bye lizards. The possibility that climate change will drive a new spate of extinctions across the world is rapidly turning from speculation into fact ...continue »  [more]

New research suggests that without action to cut greenhouse gas emissions half the Earth could become too hot for human habitation in less than 300 years ...continue »  [more]

When it comes to tackling climate change, slogging doggedly to a distant end that seems never to get closer isn't going to work. A more roundabout route is better ...continue »

The US is experiencing explosive growth in wind energy in part because its cost is now more than competitive with fossil fuels and nuclear power ...continue »

Mohonk is the rarest of the rare: a weather station whose thermometer has never missed a day, never been moved, never seen its surroundings change, for 114 years ...continue »

New research shows that Earth's climate may be up to 50 percent more sensitive to long-term increases in atmospheric CO2 than current climate models predict ...continue »

255 of the world's top scientists say that climate change now falls into the category of "fact", alongside the Big Bang theory and the theory of evolution ...continue »  [more 1]  [2]

Average global temps in April were the second hottest for any April in the satellite record, and so far 2010 is in a statistical tie for being the hottest year ...continue »  [more]

Ice core data paint a sobering portrait of the rapid retreat of most of the world's glaciers and ice caps in the face of the buildup of planet-warming greenhouse gases ...continue »

Temperatures, sea levels, snowfall – how have the numbers changed in the USA over recent decades? The EPA has issued a fascinating report ...continue »  [more]

How can you get 60% better fuel consumption, save lots of money and produce lower emissions while driving your car faster? It's all to do with smoothness ...continue »

A lump of silvery metal about the size of a golf ball could provide all the energy you will ever use in your life. That is what modern nuclear power offers ...continue »

When an ice cube melts in a glass, the water level doesn't change. Does that mean that melting icebergs don't contribute to sea-level rise? Not quite ...continue »  [more]

Even a fairly modest sized ice sheet can weigh 100 million billion tonnes. What are the geological repercussions of all that weight being redistributed? ...continue »

In mathematical proofs, if you divide by zero you end up being able to prove anything you want. A similar phenomenon crops up a lot in the work of climate skeptics ...continue »

We are altering the planet more rapidly and profoundly than ever, and much of the diversity produced by half a billion years of evolution could be lost ...continue »  [more]

Estimates on the timing of peak oil have narrowed dramatically, and now center on the 2012-2015 time frame. Even the US Joint Forces command agrees ...continue »  [more 1]  [2]

The acidity of the oceans has increased 30 percent since the Industrial Revolution, and is due to go up another 200 percent by the end of the century ...continue »  [more]

No amount of obfuscation and attacks by conspiracy theorists will alter the basic facts. Global warming is real and intensifying, says the IPCC's chairman ...continue »

Most global-warming skeptics aren't really latter-day truth-seeking Galileos, fighting an all-powerful establishment in an act of nonconformist courage ...continue »

Climate sceptics' favourite theory that volcanoes produce more CO2 than human activity has exploded in their faces with the Eyjafjallajokull eruption ...continue »

When climate change deniers seek answers to the big questions, they turn to the smartest man in the whole world. He's everywhere on the climate denial circuit ...Part 1 »  Part 2 »

In Denmark garbage is now a very clean alternative fuel rather than a smelly, unsightly problem. So why in America is most trash trucked to distant landfills? ...continue »  [more]

The tactics, personnel and organisations mobilised to serve the tobacco lobby in the 1980s were seamlessly transferred to serve the fossil fuel lobby in the 1990s ...continue »

Data from the ground have confirmed what the satellites reported: average global temps in March 2010 made it the hottest March in the record books ...continue »  [more 1]  [2]

Another inquiry into the "Climategate" affair has found no evidence of any impropriety. The science was fair and honest ...continue »  [more]  [report]  [riposte]

Goofball weathermen, Climategate, conspiracy theories – these are all a distraction from the fact that the world's emissions trajectory is extremely dangerous ...continue »

Why does the prominent climate skeptic, Christopher Monckton, describe himself as a member of the UK's House of Lords, when he is really no such thing? ...continue »  [more 1]  [2]

A new popular sport in some media these days is "climate scientist bashing". Instead of dealing with the climate problem they prefer to attack the bearers of bad news. ...continue »  [more]

We can afford to fight climate change, and there is a very strong economic case for doing so. The Nobel prize winning economist, Paul Krugman, explains ...continue »  [more]

Wind is erratic. But researchers have confirmed that linking up wind farms along the entire U.S. East Coast could provide a very consistent source of power ...continue »  [more 1]  [2]

A 68cm sea level rise would put 9% of Florida (and 70% of Miami) underwater, along with two nuclear reactors, 68 hospitals, 334 public schools and 1,362 hotels ...continue »  [more]

New research shows that rising sea levels serve as a remarkably good global thermometer, once you get to know its quirks. The implications are worrisome ...continue »  [more]

Global temps in March 2010 were the warmest for any March in the entire satellite record, according to both the institutions that analyze the data ...continue »  [more 1]  [2]  [3]

A skeptical paper by McLean and colleagues illustrates the fallible but self-correcting nature of peer reviewed science ...continue »  [riposte from McLean]  [counter riposte]

Modern meteorologists combine two qualities: they tend to lean towards climate skepticism, and they're America's most visible scientists, by a long shot ...continue »  [more]

From 1992 to 2002 Greenland lost 7 billion tons of ice a year. Then it started losing 177 billion tons a year, according to NASA satellite observations ...continue »

A little known US oil company by the name of "Koch Industries" has donated no less the $73 million to climate sceptic groups that spread false information ...continue »  [more]

The British House of Commons today issued a report exonerating Professor Phil Jones and the CRU, who have been at the center of the "Climategate" media frenzy ...continue »

Not all climate skeptics are right-wing crackpots. Many are keen to learn about the science, and have just been learning about it from dubious sources ...continue »

Fossil fuels are not really the cheapest energy. They are cheap because they are subsidised, because they do not pay for damage they cause to health and the planet ...continue »  [more]

The first thing to do when confronted with any assertion is ask where it comes from. What then is the pedigree of the claim that the globe has cooled since 1998? ...continue »

"Vigorous discussions" with global warming skeptics led John Cook to look into the science. The result is a list of 101 skeptical arguments with rejoinders ...continue »  [more]

Electric motors are better than combustion engines. They have more oomph, and no need of a gearbox to deliver it. No supercar should be without them ...continue »

There's a giant gorilla in the room of sea-level rise, and it has only been noticed by scientists during the last year. It is something called the geoid ...continue »  [more 1]  [2]

Action on climate is justified, not because the science is certain, but precisely because it is not. Think of it as a kind of household insurance ...continue »  [more 1]  [2]

NASA's James Hansen has a prediction. Unless the present El Niño rapidly transmutes into a La Niña, 2010 will likely be the warmest year in the GISS record ...continue »  [more]

New pollution-cutting rules for shipping will save tens of thousands of lives a year, but there will be a downside: an increase in the rate of global warming ...continue »

There is only one problem with a recent story trumpeted by climate denial websites about a "Climategate U-turn": it is a complete fabrication; an out-and-out lie ...continue »

Studies suggest one-third of the UK's total electricity needs could be met by tidal power alone. A breakthrough scheme to harness that energy is now underway ...continue »  [more]

Forest die-offs in the U.S. are happening on a scale unprecedented since the West was settled. They are a symptom of stress caused by climate change ...continue »

In the Southern Hemisphere, both the February 2010 average temperature for land areas and the Hemisphere as a whole represented the warmest February on record ...continue »  [more]  [more]

Should researchers help the general public understand the relevance of their work? One academic thinks so – despite sporting scars from his effort ...continue »

Balanced media coverage of science doesn't come from adding a falsehood to the truth and dividing by two. It requires recognizing the balance of evidence ...continue »  [more]

In its latest report, the IPCC predicted up to 59 cm of sea level rise by the end of this century, when it should have predicted up to 119 cm. So why the underestimate? ...continue »

There is one question that no one who denies manmade climate change wants to answer: what would it take to persuade you? In most cases the answer is nothing ...continue »

How come a big ice age happened when CO2 levels were high? It's a question climate sceptics often ask. And it is a question that has now been answered ...continue »

According to the satellite data, last month was the 2nd warmest February in the 32-year record, behind Feb 1998, itself the 2nd warmest of all months ...continue »  [graph]

New research show that the permafrost under the East Siberian Arctic Shelf is perforated and starting to leak large amounts of methane into the atmosphere ...continue »  [more 1]  [2]

After making his fortune with technology start-ups, Bill Gross has turned his attention to renewable energy and the construction of huge solar-thermal power plants ...continue »  [more]

Warnings of a crash in oil production are no longer limited to a prescient few individuals - major British companies and oil CEOs are now sounding the alert ...continue »  [more]

Climate skeptics are estranged from critical thinking, divorced from logic, alienated from even objective truth. They treat basic information as mere opinion ...continue »

A radical windmill design could hold the key to more economical wind power. It turns conventional windmills on their side and puts all the machinery at the base ...continue »

All the tropical coral reefs in the world will be disintegrating by the end of the century because of rising ocean acidity caused by a buildup of CO2 ...continue »  [more 1]  [2]

It would be an enormous relief if the recent attacks on the science of global warming actually indicated that we do not face an unimaginable calamity ...continue »  [riposte]

What motivates climate-change sceptics to send abusive hate-emails to climate scientists and journalists? Clive Hamilton investigates ... Part 1 » » » » »

Two recent accusations against scientists by prominent climate sceptics have turned out to be utterly unfounded and provably false. Apology, per chance? ...continue »  [more 1]  [2]

"Climate Auditors" single-handedly destroy the reputations of climate scientists. Their unchecked power is the real story of "Climategate" ...continue »  [more]  [riposte]

Atmospheric levels of methane have risen for three years running, prompting fears that rising temps may have activated a positive feedback loop ...continue »  [more]

Anticipation and suspicion are running high before launch of the Bloom Box, claimed to be a cheap source of clean energy from a device the size of a loaf of bread ...continue »

The distinction between scepticism and non-belief is crucial. Scepticism is healthy, but non-belief in the face of overwhelming evidence is the antipathy of scepticism ...continue »

Today's campaigners against action on climate change are backed by the same lobbies that sided with big tobacco to discredit the scientific link to lung cancer ...continue »  [riposte]

Are the authors of a recent skeptical document counting on their readers being too lazy or stupid to find out the truth? Or do they not get it themselves? ...continue »  [more]

Of the festivals of nonsense that periodically overtake U.S. politics, surely the silliest is the argument that heavy snow disproves climate change ...continue »  [riposte]

The oceans are now acidifying faster than at any time in 65 million years of the fossil record, and this may spell doom for many deep-sea marine species ...continue »

Ex-weatherman Anthony Watts says many badly sited US weather stations produce unreliable data. But such stations underestimate warming, a new study shows ...continue »

Water warmed by climate change is taking giant bites out of the underbellies of Greenland's glaciers. As much as 75 per cent of the ice is lost from below ...continue »

January 2010 was the fourth warmest January on record, and land temps in the Southern Hemisphere were the warmest ever recorded for January ...continue »

Is the massive dumping of snow from the Mid-Atlantic to New England proof positive that climate change is untrue, as climate skeptics are claiming? ...continue »  [more]

A fabricated quotation from one of the world's most eminent climate scientists has become the iconic smoking gun of the climate sceptic community ...continue »

Global warming is altering the Arctic ecosystem in a way never seen before by humans. The Arctic is the planet's air conditioner, and it's starting to break down ...continue »

Using data from the Greenland Ice Sheet Project to argue against global warming is, well, stupid, or misguided, or misleading, or something, but surely not scientifically sensible ...continue »

Sir Richard Branson and fellow leading businessmen are issuing a warning that the world is running out of oil and faces a dislocating oil crunch within five years ...continue »

One by one Africa's famous tropical glaciers are winking out of existence, and in just two more decades scientists expect the last of them to be gone forever ...continue »  [more]

The global lower tropospheric temp anomaly soared to +0.72 deg. C in January, 2010. This is the warmest January in the 32-year satellite-based data record ...continue »  [more]

Why do free-market libertarians, horrified by the collectivist solutions proposed by Greens, miraculously coalesce around a particular view on the heating of the globe? ...continue »

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function. Climate skeptics flunk it ...continue »

The "climategate scandal" is bogus and based on climate skeptics' lies. Email soundbites have been taken out of context and given perverse interpretations ...continue »  [more]

Satellite observations of Arctic sea ice need a reality check from scientists down on the surface. There's a lot less ice than the satellites are reporting ...continue »  [more]

A major hurdle to producing fusion energy using lasers has been swept aside at the US's National Ignition Facility. Ignition is on the horizon, and could happen this year ...continue »

How much extra warming do poorly sited weather stations contribute to the temperature record? A new study has yeilded results that are "counter-intuitive" ...continue »  [riposte]  [more]

Climate change skeptics watch out – there's a mole in your midst. His name is James Delingpole and he's doing a marvellous job of damaging his purported cause ...continue »

The idea that, somehow, Al Gore and his minions are the powerbrokers in climate change politics, instead of the fossil fuel interests, is amusing, points out Andy Revkin ...continue »

The good news is that the hole in the ozone layer is slowly mending. The bad news is that it's been shielding Antarctica from global warming over the last two decades ...continue »

32,000 leading scientists signed a petition against global warming? Is that really true? Well, no – as a little bit of delving into recent history quickly reveals ...continue »

With the Swifthack episode fading from the limelight, climate change denialists now want the world to focus on one paragraph of a 938-page, 3-year-old report ...continue »  [more]

Now ladies and gentlemen, the moment you've all been waiting for – George Monbiot unveils the winner of the prestigious Booker Prize for clap-trap about climate change ...continue »

The oil and coal industries have deployed an army of lobbyists, spent millions on misleading studies and engaged in outright deception to derail climate legislation ...continue »

NASA has released the monthly temp for December 2009, which closes out the decade of the 2000s. The result: 2009 was the 2nd-hottest year ever, after 2005 ...continue »

As governments, businesses, and homeowners plan for the future, they should assume that the world's oceans will rise by at least two meters this century ...continue »  [more]

If it’s that warm, how come it’s so damned cold? James Hansen et al. show why this month's weather doth not a trend make. In fact, there is no global cooling trend ...continue »

The Copenhagen Accord leaves a gap between climate impacts that can be dealt with by adaptation and those that will be avoided by mitigation. How big is the gap? ...continue »

The Pine Island Glacier in Antarctic has passed its tipping point. It is poised to collapse in a catastrophe that could raise global sea levels by 24 centimetres ...continue »

"Individual weather events, from heatwaves to big freezes, cannot be used either to prove or disprove climate change," says Richard Betts of the British Met Office ...continue »

Global warming deniers don't misunderstand the science, says George Monbiot. They rely on public misunderstanding which they can exploit to create confusion ...continue »

If we look at IPCC models for climate behavior, we see that the match is quite good. Observed global temperatures fall within the range of model results ...continue »

The analysis of the roles of the sun and of CO2 made by Gilbert Plass in 1956 looks in retrospect to be amazingly accurate. Was he prophetic, or lucky, or both? ...continue »

Does the current cold snap mean that we start 2010 in the grip of global cooling? Nope. It's little more than a big high pressure system stuck over Greenland ...continue »

Even if there is an intellectual tussle over the sensitivity of climate to human-produced greenhouse gases, there’s no disputing that they will warm the world. Andrew Revkin explains ...continue »

As the world burns, Big Oil and Big Coal have mounted one of the most aggressive lobbying campaigns in history to block progress on global warming solutions ...continue »

Climate change skepticism is likely to surge in 2010, says Rajendra Panchauri, and could make life even harder for many of the planet's poorest people ...continue »

People see cycles where there are none and extrapolate them into the future: economic recovery, or a world series victory for the Mets, or even imminent global cooling ...continue »

Stewart Brand, founder of The Whole Earth Catalogue, has long been a green activist. Solutions to the global warming crisis, he argues, require GE crops and nuclear power ...continue »

While no climate model simulation can match the exact timing of the internal variability in the climate years later, the models now in use are getting better and better ...continue »

Dissenting voices


Essays and research challenging the view that the world warming that began around 1880 is caused by human activity, that it poses a serious threat, or that the vagaries of earths climate are within human control.

If Exxon wants to put money into fostering open debate about "Climate Change", then so what? If the science is so strong, it will surely be able to fend off criticism ...continue »

When cyclists are continually told that their mode of transport is saving humanity from doom, it's no wonder so many of them are annoying pricks ...continue »

Incredibly, none of the three UK investigations of climategate looked at the science itself. Without candor, trust in climate science cannot be restored ...continue »

Stanford University physicist Robert Laughlin says governments – and people generally – should proceed with more humility in dealing with climate change ...continue »

Climate researchers don't know nearly as much about climate change as they profess, says Roy Spencer in his Global Warming Skepticism for Dummies ...continue »

Jonathan Kay claims only a tiny number of eminent scientists reject global warming theory, while Terence Corcoran argues that the "consensus" is illusory ...Kay » Corcoran »

At best the various Climategate inquiries are mealy-mouthed apologies that are difficult to parody. At worst they are patently incompetent and even wilfully wrong ...continue »  [more]

A new book exposes in delicious detail, datum by datum, how a great scientific mistake of immense political weight was perpetrated, defended and camouflaged ...continue »

The IPCC's attempts to hide the truth about its exaggerated claims on the deforestation of the Amazon have ended in defeat, says Christopher Booker ...continue »

The ugly pressure tactics discussed in the Climategate emails have made it nearly impossible to publish anything non-alarmist in peer-reviewed climate journals ...continue »

Ice has flatlined in the North, while it goes through the roof in the south. The widely claimed polar meltdown continues to be nothing more than bad fiction ...continue »

Climate change is real and man-made, explains the author of a new study published in Physics Reports, but it is caused CFCs, not CO2, and the planet is no longer in peril ...continue »

"Move along now, please... Nothing to see here..." was the predictable burden of Sir Muir Russell's investigation into Climategate. Are we surprised? ...continue »  [more 1]  [2]

The Russell review found the climate scientists had not lied – but failed to criticise them for corrupting a scientific process that demands transparency ...continue »  [more]

The coming cooling of the planet will return it to where it was in the '60s, '70s, and '80s, says Joe Bastardi, long-range forecaster at AccuWeather ...continue »  [riposte]

Why would anyone have expected that science would be the subject the Science Appraisal Panel's study of the Climate Research Institute? Here's why ...continue »

While everyone's watching the Arctic extent with intense interest, it's bipolar twin continues to make enough ice to keep the global sea ice balance near normal ...continue »

What happens if the measurements upon which climate science depends are altered by something as simple as a coat of paint that lifts the average recordings? ...continue »

Several scientific consensuses before 1985 turned out to be wrong or exaggerated: e.g. dietary fiber, fusion reactors, stratospheric ozone depletion, and saccharin...continue »

A new survey shows that there is little agreement even among top climate scientists about how much of a threat global warming is going to be ...continue »

Despite years of investment, Britain's renewable energy revolution suffered an abrupt setback this winter due to an inconvenient shortage of rain and wind ...continue »  [more]

The scientist behind the controversial "hockey stick" graph has said it was 'somewhat misplaced' to make his work an "icon of the climate change debate" ...continue »

If the evidence behind the IPCC's "Amazongate" claim exists, is it not now a matter of considerable public interest that we should be told what it is? ...continue »  [more]

It's astonishing to see the IPCC and the Royal Society getting down and dirty, taking sides against the skeptics and doing their darndest to make sure their side wins ...continue »

The problem with the IPCC is that the very people who can answer the question on the future direction of climate also depend on the answer being "yes" ...continue »

The claim that anthropogenic CO2 is responsible for the current warming of Earth climate is scientifically insupportable because climate models are unreliable ...continue »

A new study lends a pseudo-scientific air of respectability to what amounts to a black list of scientists who don't accept the global warming faith ...continue »  [more 1]  [2]  [3]  [riposte]

Data from a unmanned submarine are raising questions about whether the loss of ice from Antarctica's Pine Island Glacier is a result of climate change ...continue »  [more]

"In hindsight, probably too much was read into 2007 and I would take some blame for that," says the NSIDC director over the Arctic sea ice scare ...continue »

A new study has found that the intensification of farming through the green revolution has unjustly been blamed for speeding up global warming ...continue »

Oil companies like BP should be honest about what they do and not be ashamed of it. Without oil the modern world as we know it would simply grind to a halt overnight ...continue »  [more]

Hubristic overestimation of human significance may be the fundamental reason for broad acceptance of the theory of man-made climate change ...continue »

A rolling "dead zone" off the Gulf of Mexico is killing sea life and destroying livelihoods, but it hasn't been caused by the Deepwater Horizon oil spill ...continue »

The truth behind the story that Margaret Thatcher launched the worldwide alarm over climate change is much more interesting than is generally realised ...continue »

The sun's magnetic activity is diminishing, and the sun may even be shrinking. Something profound is happening. The big question is what? ...continue »  [more 1]  [2]  [3]

Behind the appearance of settled science, there is now a tremendous battle going on involving top-level atmospheric physicists, solar scientists and oceanographers ...continue »

As part of their effort to win the climate change debate some leading environmental organizations are prepared to risk the lives of thousands of people ...continue »

We have all been bludgeoned senseless with talk of the arctic sea-ice's dramatic decline in 2007, but the ice was never in any danger of a complete meltdown ...continue »

One of the standard tenets of the global warming bible is that malaria will get worse as temps rise, but the link between temps and malaria is not straightforward ...continue »

It's troubling that the National Academy of Sciences should appoint a committee that includes global warming adherents to "study" the factual basis of global warming theory ...continue »

One of the propaganda artifices deployed by climate-extremists has been the careful avoidance of debate with skeptics knowledgable about the science ...continue »  [riposte 1]  [2]  [3]  [4]

The IPCC have departed from science by becoming advocates for one particular set of hypotheses, and becoming militant fighters against all others ...continue »

When researchers observe a decrease in cloud cover accompanying warming, they assume that the latter caused the former, and ignore the opposite possibility ...continue »  [more]

The theory was that small coral islands in the Pacific would be wiped off the map by rising sea levels, but most are stable and some have even grown ...continue »  [more]

The end, we are told, is always approaching. No sooner has one super-resilient-flesh-eating-virus been forgotten than an imminent ecological collapse takes it place ...continue »

A shift in levels of public concern over global warming has left many once celebrated climate researchers feeling like the used-car salesmen of the science world ...continue »  [riposte]

What Eisenhower warned about has now come to pass. The scientific elite increasingly dictates public policy and thereby secures the continued flow of research funding ...continue »

A new ice drilling program in Antarctica could settle a central question in the dispute over climate change, by documenting how CO2 influenced temps in the past ...continue »

The UK's Royal Society, is reviewing its public statements on climate change after 43 Fellows complained that it had oversimplified its messages ...continue »  [more]

The Oxford Union Society, the world's premier debating society, has carried the motion "That this House would put economic growth before combating climate change" ...continue »

In specialist areas like paleoclimatology certain scientists can gain considerable power if they have a good connection to the publishers of the relevant journals ...continue »

Nowhere has the shift in public opinion against global warming theory been more striking than in Britain, home base for a thriving group of climate skeptics ...continue »

Why does so much "research" claim a warmer planet "may" lead to more diarrhea, acne, childhood insomnia, war, violent crime, and dying Mongolian cows? ...continue »

We need to establish a Team B of competent climate scientists, charged with questioning the party line, says William Happer, Professor of Physics at Princeton ...continue »  [riposte]

A weak solar cycle and increased volcanic activity could combine with the Pacific Decadal Oscillation's cool phase to create a "Triple Crown of Cooling" ...continue »

Can a trained chimp do a better job of predicting the number of Atlantic hurricanes than the National Oceanic and Atmospheric Administration? We'll soon find out ...continue »  [more]

Perhaps we should stop accepting the term, "skeptic." Skepticism implies doubts about a plausible proposition, but global warming alarmism is hardly plausible ...continue »  [riposte]

New Zealand is a small country, and not an easy place to keep secrets. But it's been running its climate policy on the basis of bogus data for many years ...continue »  [more]

When even climate experts at MIT have radically divergent views about the threat posed by climate change, how are the rest of us supposed to agree? ...continue »

If some species is generally regarded as being "good" – penguins, polar bears, butterflies, etc. – then global warming is supposed to do bad things to it ...continue »

Because of the possibility of deadly leaks from CO2 sequestration schemes, few people will to want to live near a pipeline or an underground storage cavern ...continue »  [more]

"ManBearPig is real!" declare top climate scientists. "And to prove it here's a photo-shopped image we found on the internet of a polar bear on a melting ice floe" ...continue »

Dr. Willie Soon, a solar and climate scientist at the Harvard-Smithsonian Center for Astrophysics, has challenged his peers to "take back climate science" ...continue »

Shale gas will change the world. It will prevent the rise of new energy cartels. It will alter geopolitics. And it will slow the transition to renewable energy ...continue »

The suffering endured by poor, honest, hard-working climate scientists as they seek to warn a careless world of looming climate disaster makes the heart bleed ...continue »

Not one of the IPCC climate models behaves like the real climate system does when it comes to feedbacks during interannual climate variations ...continue »

The theory that Venus' high temps are caused by a runaway greenhouse effect is absurd, in part because its surface receives no direct sunshine ...continue »  [more]  [riposte]

Dr Roy Spencer, who analyses temp data from NASA's Aqua satellite, describes the global warming scare as the "the worst case of mass hysteria the world has known" ...continue »

Melt season in the Arctic has started almost a month later than normal, and average ice extent in April 2010 was the largest for any April in the past decade ...continue »  [more]

Substantial temp increases in the Arctic, ice-free seas, and a "catastrophic" retreat of glaciers in Spitsbergen. Sounds familiar. But the date is 1934 ...continue »  [more]

The inherent limitations of computer modeling were starkly displayed by the experiences of the crew of a research aircraft on the night of Feb. 28, 2000 ...continue »

When temperatures records are revised in a way that creates a warming trend where none formerly existed, inquiring minds want to know what's going on ...continue »

Environmentalists say that if we jettison fossil fuels, we'll breathe easier, stop global warming and revolutionize our economy. It's not true ...continue »  [more]  [riposte]

Sloppy record keeping, cherry picked data, and inadequate statistical methods don't inspire confidence in the research product, says climatologist Judith Curry ...continue »

The Penn State climate professor who came up with the hockey stick temperature graph says he'll sue the makers of a satirical video that's a hit on You Tube ...continue »

Funny how "climate change" is causing outbreaks of a fungus to spread southward in North America, where moving south generally takes you to warmer environs ...continue »

Could there be any better illustration of the opinion-forming classes' aloofness from the public than their embrace of the volcanic ash spreading from Iceland? ...continue »

The public is becoming increasingly aware that something other than science is going on with regard to climate change. Climategate has had an effect ...continue »  [riposte 1]  [2]

Climate researchers are rather myopic. They think that the only way for global-average temperatures to change is for the climate system to be forced "externally" ...continue »

Recent efforts by the climate establishment to hold the line are so flawed that they are in danger of backfiring, leaving the science more questionable than ever ...continue »

An arch-critic of climate scientists has won a major victory in his campaign to win access to data that could reveal details of Europe's past climate ...continue »

One missing letter, an M, can wreck a whole month's worth of climate data. Reporting errors due to careless data entry are all too common worldwide ...continue »

Where is the missing heat? Current observational tools cannot account for half the heat believed to have built up on Earth in recent years ...continue »  [more]  [riposte]

New research finds that low solar activity can indeed cause frigid winters in northern Europe, by promoting the formation of giant kinks in the jet stream ...continue »  [more]

Under normal circumstances, someone who started a campaign called Trees Have Rights Too might reasonably be suspected of being an LSD-tripping hippy ...continue »

In less than two years, an organization called ACE has aggressively built a nationwide organization to capture the next generation to promote global warming alarmism ...continue »

The precautionary principle might sound harmless enough, but a culture in which people don't take chances with technology is one with a very limited future ...continue »

What are the key questions about climate change, and what are the answers? ...Willis Eschenbach oulines his views »  Walt Meier responds »  Eschenbach replies »

The green movement is guilty of the worst kind of eco-imperialism – where the African poor are kept "traditional" and "indigenous" for the benefit of the rich ...continue »

It is their doom-laden political outlook that convinces climate-change alarmists that the world is ending, not scientific evidence. Politics comes first, science second ...continue »

In a world where climate change has always been the norm, it is now taken as punishment for sinful consumption, says professor Richard S. Lindzen ...continue »

Ross McKitrick, an intrepid economics professor, has tugged apart the thin mathematical threads that once held together the story of climate change ...continue »

Arctic sea ice reached its maximum extent for the year on March 31 – the latest date for the maximum in the entire satellite record ...continue »  [more]  [riposte 1]  [2]

Computer models can yield highly precise answers to questions that used to be rhetorical – but precise though they may be, they are often wrong ...continue »

When the subject is the theory that the Earth is warming "there's been a squelching and demonizing of people who would dare speak up," says Joe Bastardi ...continue »

Would it really be the end of the world if temps rose by more than the much-quoted limit of two degrees Celsius? Spiegel Online investigaes ...continue »  [more]

It appears that for the first time since 2001, Arctic sea ice will hit the "normal" line in the next few days. So much for the death spiral theory ...continue »  [graph 1]  [2]  [3]  [4]

E-mails from 2007 reveal that by its own admission NASA's temperature records are in even worse shape than the besmirched Climate-gate data ...continue »

"Fudging the data in any way whatsoever is quite literally a sin against the holy ghost of science", says James Lovelock ...continue »  [more]  [riposte]

The 20-year effort by environmentalists to establish climate science as the primary basis for action to decarbonize the global energy economy today lies in ruins ...continue »

Sceptics have not been surprised to find that almost all the members of the "Climategate" inquiry are committed, even fanatical advocates of global warming ...continue »

Appointing Lord Oxburgh to lead a supposedly neutral official investigation into Climategate is like putting Dracula in charge of a blood bank ...continue »

There is very little temp data for the Arctic Ocean, yet the GISS map shows radical heating. So how do they do they create data when there is none? ...continue »

This has been an Imelda Marcos kind of season for shoe-dropping about global warming. Here are some of the latest talking points to bring up with an alarmist ...continue »

Are consumers of "green" products more likely to be miserly and thieving? A series of psychological experiments would seem to suggest just that ...continue »  [more]

The extinction of Costa Rica's golden toad was the first to be blamed on anthropogenic global warming. But humanity's conviction of toadacide was premature ...continue »

The WWF hoped to find $60 billion growing on trees in the Amazon. Its scheme involved getting carbon-credits for "saving" forests not actually under threat ...continue »

The skeptics "have kept us from regarding the science of climate change as a religion. It had gone too far that way." So says James Lovelock, the grandaddy of green ...continue »

The history of science shows that scientists are not immune to the irrational dynamics of the herd. The very idea of "scientific consensus" should give us pause ...continue »

Environmentalists need the latest cutting-edge brain science to help the dim-witted public see global warming in the same enlightened way that they do ...continue »

There are a great many myths surrounding those who are wrongly labeled "deniers" of climate change. Most of them can be distilled into six basic accusations ...continue »

The IPCC is facing fresh criticism after new research contradicted its claims about the devastating effect climate change could have on the Amazon rainforest ...continue »  [riposte]

Despite strong evidence that growing crops to produce ethanol is harmful to the environment and the world's poor, half the U.S.'s corn crop will soon go to biofuel ...continue »

Pity the poor Climategaters. The staid were played. Gentlepersons were violated. And the billion-dollar global warming complex can't compete with spunky skeptics ...continue »

A new clam-shell-based reconstruction of past temperatures shows the little ice age, the medieval warm period and a very hot Roman warm period ...continue »

Green jobs are a waste of space, a waste of money, a lie, a chimera. You know that. I know that. So why are our political leaders trying to deceive us? ...continue »  [more]

If you want to know what's really behind the international Climategate scandal you need to know about Greg Taylor, a victim of good intentions gone bad ...continue »

It is increasingly clear that the leak of the CRU emails has done for the climate change debate what the Pentagon Papers did for the Vietnam war debate ...continue »

The whole AGW belief system is based on the idea that anthropogenic CO2 molecules are more equal than the naturally occurring ones. Much, much more equal ...continue »

In climate research peer review is sometimes looked upon as a moral project, where decisions are influenced not simply by science but by a higher cause ...continue »

The IPCC's glaciergate episode was a huge blunder that reveals much about the scaremongering and belligerent tactics of the green movement ...continue »

Future historians of science are likely to judge the 1988-2009 frenzy of climate change alarmism as even more damaging to science than Lysenkoism ...continue »

The solar panel is the ideal modern status symbol for the British middle classes. It signifies both wealth and moral superiority, even if it's perfectly useless ...continue »

Give Tata a billion pounds: it then closes Britain's last great steelworks and puts the money into Indian plants. This is the grotesque reality of carbon emissions trading ...continue »

When a skeptic points to a paper refuting the AGW theory, climate change alarmists shout "cherry picking!" They don't understand how science works ...continue »

Warming is not a killer, but global cooling is. It would only take a few years of global crop failures from cold weather to put populations at serious risk ...continue »

Roger Pielke Jr.'s frustrating experience with the IPCC suggests that it desperately needs a mechanism for resolving allegations of error in its work ...continue »

Dr. Judith Curry argues that climate scientists can recover the public's trust in part by communicating uncertainties. Willis Eschenbach begs to differ ...Curry »  Eschenbach »

Why does Climategate matter? Who cares whether the data on a computer at some obscure English university has been corrupted? Lorne Gunter explains ...continue »

The well-known principle, "knowledge is power" has its obverse, "ignorance is impotence". And ignorance is maintained by a variety of socio-technical means ...continue »

Technology enables access to information. This is inconvenient for those who want to claim unequivocal truth without evidence. But that's the way it is ...continue »  [riposte 1]  [2]

As the scandals mount, it becomes clear that claims of man-made global warming aren't based on scientific methods at all. The hysteria is based on fraud ...continue »

More fog is consistent with predictions of climate change. So, it turns out, is less fog. Is the same amount of fog also "consistent with" such predictions? ...continue »

The end result of the IPCC "assessment" process is to elevate evidence which supports preconceived ideas and denigrate ideas that run counter to them ...continue »

It has been a bad – make that dreadful – few weeks for what used to be called the "settled science" of global warming, and especially for its gold standard, the IPCC ...continue »

In the wake of all the other recent scandals, "Africa-gate" may be the most damaging of all, because of the involvement of the IPCC's chairman ...continue »  [more]  [riposte]

The academic at the centre of Climategate, whose data underpin climate change theory, has admitted that he has trouble keeping track of the information ...continue »  [more]  [riposte]

The problem with the IPCC is not that some of its science is dodgy, but that it substitutes science for morality and elevates science above politics and democracy ...continue »

Record snowfall illustrates the obvious: The climate change fraud is without equal in modern science. Man-made global warming theory is a hoax ...continue »  [more]

The global-warming thrill ride looks to be coming to an end, undone by the same serial exaggeration and moral preening that discredited previous apocalypses ...continue »

Climategate is particularly significant because the scandal was created by people within science who can be presumed to have been acting with the best of intentions ...continue »

Senior scientists are now expressing concern at the way the IPCC compiles its reports and have hit out at the panel's use of so-called "grey literature" ...continue »  [more]

Doug L. Hoffman is skeptical of the claim that human produced CO2 will have the dramatic effect on Earth's temperature projected by the IPCC. He explains ...continue »

Northern hemisphere forests may now be growing faster than at any time in the last 200 years as a result of climate change and higher levels of CO2 in the air ...continue »  [more]

Could global warming actually be good for humanity? A close look at the science show how it's been manipulated to fit the preconceptions of warming alarmists ...continue »

The global political system isn't capable of producing the kind of result the global warming activists want. It's like asking a jellyfish to climb a flight of stairs ...continue »

Osama bin Laden says that climate change "is not an intellectual luxury but an actual fact." It's nice to see that he and President Obama can agree on something ...continue »

It is difficult to imagine a more bizarre academic dispute. Where exactly are 42 weather stations in China? The answer points to scientific fraud ...continue »  [more 1]  [2]  [3]  [riposte]

"The forces trying to tackle climate change are in disarray, wandering in small groups around the battlefield like a beaten army," says a senior British diplomat ...continue »  [more]

New research by a top climate scientist suggests that one-third of warming during the 1990s was due to an increase in water vapour, not emissions of CO2 ...continue »  [more]  [riposte]

Can climate forecasts still be trusted? First it was a series of e-mails that led many to doubt the veracity of climate scientists. And now there is glaciergate ...continue »

The US is by far the world's leading grain exporter, but a quarter of all the grain it produces now ends up as biofuel in cars rather than being used to feed people ...continue »

Some scientists have exaggerated the impact of global warming and there's a need for more honest disclosure of uncertainties, says the UK's chief scientific adviser ...continue »

Scientific advisory institutions must have rigorous and transparent policies to ensure trust and the credibility of their work. The IPCC has failed in this respect ...continue »

The scientist behind the false IPCC claim that Himalayan glaciers will melt by 2035 has admitted it was included to put political pressure on world leaders ...continue »  [more]

A new study has uncovered compelling evidence that America's principal climate centers have been manipulating global temp data to create a bogus warming trend ...continue »  [more]

The IPCC swallows unexamined what it finds convenient, while raising a thousand technical objections to anything inconvenient. This is religious crusading, not science ...continue »

Our planet has warmed much less than expected based on estimates of its "climate sensitivity". Stephen Schwartz of Brookhaven National Laboratory has examined why ...continue »

Sorry, but this stinks. Lurking behind the IPCC's treatment of Himalayan glaciers is a classic and unambiguous case of financial conflict of interest involving its chairman ...continue »

The Three Pillars of Science are theory, experimentation and computation. In the case of climate science each of these three pillars is very wobbly at best ...continue »

The world has been misled over the threat of a Himalayan glacier melt, IPCC bigwigs now admit. The "evidence" turns out to be phone call made in 1999 ...continue »  [riposte]

If a predictive computer model for the climate has not been proven to fully reflect reality, then it has very limited use and ought to be treated like a horoscope ...continue »

As long as global warming is at a standstill and the deadlock between the West and the rest of the world lingers, international climate politics will stay on ice ...continue »

The climate is changing Downunder, but it has nothing to do with weather. Rather, the political climate is moving toward greater skepticism about global warming ...continue »

How's the weather been in Central Park for the last century? The story is one of stable temps and unstable "adjustments" by climate scientists keen to prove a point ...continue »

The bitter winter over much of the Northern Hemisphere is really only the start of a trend toward cooler weather likely to last for 20 or 30 years, say climate scientists ...continue »

The science is settled, saith Al Gore. Unless the culprit in global warming, if any, turns out to be a completely different gas. CO2 may be an innocent bystander ...continue »

The fight against global warming has become a war, some argue. In such a plantary emergency, the future of the human race is at stake: democracy does not work ...continue »

Are we facing a Big Chill, in the form of decades of cold weather? Solar magnetic activity is at an all-time low. If the Svensmark effect is real, the human race may be in trouble ...continue »

IPCC scientists may try to hide the evidence, but 2009 was another year of global cooling, with many low temperature and high snowfall records smashed ...continue »

Michael Mann, architect of the hockey stick curve, the one who tried to abolish the Mediaval Warm Period, may have a very unhappy new year. James Delingpole tells why ...continue »

The towering seas, storms, droughts and mass extinctions of climate catastrophism owe less to climatology than to eschatology ...continue » ... readers respond

A study in Nature in 2004 predicted that 37% of all species might soon go extinct due to habitat reduction caused by global warming. So where are the corpses?...continue »

Now that the Copenhagen games are out of the way, it is time to take a long, considered look at the ways climate science has become captive to IPCC politics ...part 1 ...part 2