Climate change is a significant and lasting change in the statistical distribution of weather patterns. In public discourse, often used as a shorthand for the effects of anthropogenic global warming.

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Are the latest estimates of the cost of climate policy five time higher than the projected benefits?

Bjorn Lomborg argues that the implication of the latest IPCC report is that current mitigation policies are not smart in that the cost of mitigating CO2 emissions is much higher than the benefits: ...
4
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178 views

Is ocean acidification happening?

This YouTube video snippet, Dr Don Easterbrook claims there is not enough CO2 available to affect the oceans enough to make them go lower than a pH of 7, and hence there is no acidification. Is this ...
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152 views

Will a warming climate cause more crime?

The Register reports, somewhat skeptically, that an american consultant has produced an analysis claiming that climate change will lead to an increase in crime. The paper, published in the Journal ...
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469 views

Have global surface temperatures not shown significant warming since the late 1990s?

Those skeptical about the science of global warming have frequently alleged that the surface temperature record has "paused" since about 1998 and showed no significant warming trend (see this recent ...
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1answer
405 views

Is a billion dollar lobbying campaign primarily responsible for opposition to climate policy?

A recent article in arstechnica reports that there is a large flow of funding from some conservative groups to a network of climate denying think tanks and lobbyists. The article Reports how work by ...
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3answers
274 views

Has climate change measurably increased the likelihood of tropical storms such as Haiyan?

The recent extreme tropical storm Haiyan has brought the relationship between cyclones and climate change back into the newspaper headlines. This recent headline from Britain's Daily Mirror suggests ...
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798 views

Does the phase-out of incandescent light bulbs measurably reduce overall electrical power consumption?

Many countries are phasing out incandescent light bulbs. For example, in the European Union, various types of classic light bulbs have been removed from the market in the last years. The claim is ...
12
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1answer
514 views

Is climate change currently good for the world economy?

Bjorn Lomborg has just edited a new book How Much have Global Problems Cost the World? (Kindle version here) in which he assembles economic analysis of the world's major challenges. The point of the ...
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5answers
419 views

Did the IPCC obfuscate the evidence in a way that obscures the discrepancy between previous climate models and recent observations?

Just before the recent IPPC meeting which was due to publish new analysis on climate change, the Financial Times published an excellent summary of the difference between predictions made in the last ...
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5k views

Did the Arctic Ice Sheet grow by 60% from 2012 to 2013?

I came across this picture on Facebook. The image claims to have been taken from a NASA satellite. I am skeptical this is correct, and if it is, does it show the ice sheet has increased in size ...
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2answers
623 views

Does this graph show climate-change predictions don't meet observations?

Dr. Roy Spencer, a climate change contrarian, posted this graph on his blog claiming that observed temperature trends are much lower than what climate models predict: Is Spencer misrepresenting ...
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3answers
766 views

Is the cost of preventing climate change 50 times higher than the cost of adapting to it?

Political activist Topher has created the "50-to-1" project. In the explanatory video, he claims that: It's 50 times more expensive to try to stop climate change than it is to adapt to climate ...
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2answers
287 views

Did UK Met Office claim in 2012 that global warming stopped 16 years ago?

Not the most respectable source, nevertheless mainstream newspaper Daily Mail claimed that: Global warming stopped 16 years ago, reveals Met Office report quietly released... and here is the ...
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524 views

Have there been 28 years of “above average temperatures”?

350.org has posted following image on FB 341 months is a long time. If you're 28 or younger, you haven't experienced a full month of average global temperatures ever in your lifetime. ...
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305 views

Can some simple, old models of the effect of CO₂ predict temperature better than complex modern climate simulations?

A recent post on the climate skeptic blog climateaudit.org showed some comparisons of the relationship between world temperature and CO2 over the 20th century from a simple model originally published ...
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0answers
118 views

Does 51% of CNBC climate coverage deny that climate change is caused by man-made pollution?

Here is the source of the claim: Mediamatter for America climate statistics graph Tweeted, and re-tweeted by Al Gore The source that the image refers to: REPORT: CNBC's Climate Denial Is Bad For ...
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2answers
303 views

Are rising temperatures making fires worse?

Al Gore tweeted: Ferocious wildfire in California forces evacuation of ~3,000 [...] Rising temperatures are making fires worse. (Emphasis mine) Is this true?
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207 views

Is global temperature significantly affected by time of galactic year?

There is a claim that different patches of the galaxy have different climate effects due to variations in cosmic ray strength. I've occasionally heard this used to explain global warming but more ...
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7answers
3k views

Is it accurate to say that 97% of experts agree that global warming is anthropogenic?

A recent spate of newspaper headlines reported that 97% of scientists agreed with the theory of anthropogenic global warming (AGW). The UK's Daily telegraph reported: A review of 12,000 scientific ...
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3answers
466 views

Does physics give a climate sensitivity to carbon dioxide of about 3°C?

A letter to the editor of the Economist from Professor Anders Levermann of the Potsdam Institute for Climate Impact Research stated the following: The IPCC’s range on sensitivity is supported by, ...
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2answers
579 views

Are fossil fuels making the world greener?

The popular understanding (at least among those who are not climate skeptics) of global warming is that it is likely to create environmental catastrophe for reasons such as spreading deserts and ...
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2answers
397 views

Are the IPCC climate change models overestimating sensitivity to carbon dioxide?

A recent report in The Register suggests that we might be currently overestimating the degree to which the world will warm with increasing carbon dioxide. Climate sensitivity is, crudely, the slope ...
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396 views

Is avoiding global warming by preventing CO₂ emissions far too expensive compared to geoengineering or adapting to a warmer world?

Experts in the science of global climate change often criticise their opponents by disparaging their expertise in climate science. But experts in climate science are not experts in economics. So when ...
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618 views

Is climate close to a “tipping point”?

James Hansen has long used the idea of a climate tipping point in his public arguments for urgent and drastic action to combat climate change (For an extended exposition of his idea, see a pdf of one ...
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133 views

Did the Roman Empire and the Han Chinese cause (some) global warming? [duplicate]

Possible Duplicate: Did the development of agriculture prevent an ice age occurring? Some recent news reports about ancient anthropogenic methane emissions have hinted that the simultaneous ...
14
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1answer
765 views

Does being a strong free market supporter correlate with rejection of scientific claims?

The following research claims that there is a link between one being a strong free market supporter and being more likely to reject scientific claims: Paralleling previous work, we find that ...
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5k views

Does a “mosquito line” exist, above which mosquitos do not travel?

Is there any scientific definition or evidence of such a thing as the mosquito line? My first apartment in Manhattan was on the 25th floor of the Park Row building in the Financial District. The ...
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1answer
344 views

Has the Urban Heat Island effect on the US temperature record been underestimated?

One of the early climate-skeptic arguments against the consensus view that the world is warming to a dangerous extent, was that the instrumental record of temperature was corrupted by the Urban Heat ...
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330 views

Will reducing atmospheric CO₂ reverse the effects of climate change over a few decades?

There are many calls to help bring down Carbon Dioxide levels. But what are the effects of such an action? My intuition of the earth as a slow-moving complex system tells me that it will settle into ...
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346 views

Do women 'consume more sustainably than men'?

European Parliament Committee on Women's Rights and Gender Equality has adopted the resolution "on women and climate change". The report argues that climate change exacerbates gender ...
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380 views

Have western governments spent $100billion on global warming research and advocacy?

The author, Robert M Carter argues against Anthropogenic Global Warning and his book is called Climate: the counter consensus. In it he makes two related claims: that the cumulative funding on climate ...
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4answers
3k views

Will melting icecaps and glaciers cause the ocean to rise?

I often hear people claim "global warming will cause the ice-caps to melt, and that will cause the water levels in the ocean to rise, and that will cause major world-wide flooding." Now, ignoring the ...
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432 views

Is the United Kingdom funding forced sterilization in India to combat climate change?

The claim is made here: Tens of millions of pounds of UK aid money have been spent on a programme that has forcibly sterilised Indian women and men [...] Yet a working paper published by the ...
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1answer
858 views

Are glaciers melting?

There seems to be a scientific consensus that glaciers are melting. For instance: Buzzle (Non-peer reviewed web-article): The last century has been a problem for glaciers across the globe. They ...
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1answer
161 views

Can economics of large-scale societal change be accurately predicted? [closed]

Several questions relating to climate change require predictions of costs extrapolated over global scale (e.g., Will a warming world directly damage human health, Could global warming be good for ...
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508 views

Will a warming world directly damage human health?

It is widely believed that a warming world will be a worse world (but see this question for a discussion of the minority view: Could Global Warming be good for life?) The medical community seems to ...
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816 views

Was the cretaceous the last time atmospheric carbon dioxide was significantly higher than it is today?

Dr. Michael E. Mann recounts a story in his recent book (the Hockey Stick and the Climate Wars) about an encounter with Hilary Clinton during a hostile congressional hearing. While he was fending off ...
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1answer
577 views

Is global warming irreversible?

I have heard countless times the perils of global warming and how we should all do our fair share to save the Earth for future generations. Here is but one example from an NPR article: "Global ...
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1answer
669 views

Do candles emit ten times the carbon dioxide of an equivalent lightbulb?

In Wasteful Earth Hour?, it's claimed that candles emit roughly 10 times the carbon dioxide of light bulbs of the same brightness. While emissions will vary depending on the candle, the lightbulb and ...
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2answers
552 views

Global warming and mild winters

Does global warming make for milder winters? What about specifically North America? (You often hear people extol global warming for giving us mild winters. Is there evidence of a causal link?) Two ...
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392 views

Is reducing carbon emission from cars futile?

One of the claims in "SuperFreakonomics" is, that reducing CO2 emissions produced by cars have very little practical impact on global warming. Their arguments are: human activity is responsible for ...
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1answer
340 views

Are the leaked Heartland Institute documents legitimate?

Dr. Phil Plait just posted this regarding the leak of some documents from a group called the Heartland Institute. There is some skepticism as to the authenticity of these documents. Are these ...
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246 views

Are the specific claims from the “WSJ 16” climate skeptics true?

The Wall Street Journal letter by 16 "prominent scientists" has already provoked a question here ( Are the 16 scientists who claim that climate change is not something to worry about actually ...
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2answers
2k views

Are the 16 scientists who claim that climate change is not something to worry about climate scientists?

This is a pretty specific question – in the Wall Street Journal article dated January 27, 2012 entitled "No Need to Panic About Global Warming. There's no compelling scientific argument for drastic ...
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724 views

Could Global Warming be good for life?

A paper from Nature Geoscience (reported by the BBC here) claims that the carbon dioxide humanity has pumped into the atmosphere is holding off a new Ice Age. This has revived an old idea best ...
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1answer
349 views

Do McKitrick's criticisms of the IPCC accurately represent their processes?

Whatever your position on climate change the most significant results about the scientific consensus are supposed to emerge from the International Panel on Climate Change (the IPCC). It is an ...
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186 views

Are there alternative methods of meat production (such as free-range meat) that are better for the environment than factory farmed meat? [duplicate]

Possible Duplicate: Organic food is worse for the environment because it requires more land than non-organic food Most meat in developed nations is produced by Industrial agriculture ...
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1answer
581 views

Is the world warmer now than during the Medieval Warm Period?

Climate change seems to polarise comment into denialists and believers. But good skeptics should be able to address specific issues with the data without falling into the anti-science denialist camp. ...
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383 views

Do the recent CLOUD results have significant implications for global warming?

According to this Science Daily summary of a recent paper published in Nature and the abstract at Nature, a recent result indicates that cosmic rays play a larger role in cloud formation than was ...
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467 views

Do wind farms have a significant impact on weather patterns in the US?

On my way in to work today there was a guest on the radio claiming that the "Heat Dome" was the result of the disturbance of natural wind patterns by the windfarms that have proliferated the ...