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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Will global warming reduce available oxygen?

I saw a friend "like" this news article on Facebook which claims that phytoplankton would stop oxygen production: "If the world’s oceans warmed by 6 degrees Celsius—a realistic possibility if ...
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115 views

Does global warming even exist? [duplicate]

The controversy around the existence of global warming is very prominent, and hot debate. There are as many people claiming that global warming doesn't exist, as there are claiming that it exists. ...
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98 views

Has there been no global warming for 18 years? [duplicate]

I have heard Ted Cruz and other people multiple times say that there has been no global warming for the past 18 years. They usually pull this chart (which has gone viral, and can be found on dozens ...
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2answers
181 views

Are annual contributions to carbon in the atmosphere due to human activities increasing by 6% per annum?

I recently began reading the 2014 book, The Sixth Extinction: An Unnatural History by Elizabeth Kolbert. When speaking about the amount of carbon that is added to the atmosphere by human activities (...
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74 views

Is AGW a scientific theory? [duplicate]

I believe the anthropogenic global warming is a fact, and that the scientific community has reached a consensus about it, but may we call it a (proved) scientific theory? This question was also done ...
9
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1answer
429 views

Is Antarctica gaining or losing ice?

A recent NASA study says Antarctica is gaining ice: Ice, Cloud and land Elevation Satellite (ICESat) data (2003–08) show mass gains from snow accumulation exceeded discharge losses by 82 ± 25 Gt a–...
9
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454 views

Did Exxon suppress its own scientific results on climate change?

Some environmentalists have recently claimed that Exxon did research on global warming and then suppressed the results. For example, Bill Mckibben writes this in the Guardian: Exxon knew all that ...
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133 views

Is there one climate model equation or are there many? [closed]

I was reading an article referenced by the No Agenda show on Dr. David Evans of Australia pointing out a flaw in the equation now, either I'm thinking of this too simplistically, he is thinking about ...
2
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190 views

Has the historical average temperature stayed the same since 1980 [closed]

Thanks to Wolfram Alpha we have access to a great deal of historical temperature data. One would think that through Wolfram Alpha one would see a visual trend in temperature upwards as it has ...
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61 views

Do the Alberta tarsands/oilsands potentially contribute significantly to greenhouse gas emissions? [closed]

According to 15 ways Alberta doesn’t get the credit it deserves on the Environment: The [Canadian/Albertan] oilsands contribute less than 0.15% of global GHG emissions, a number that has been ...
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68 views

Chemtrails : A dangerous govt. plot or just another debunked theory? [duplicate]

According to countless chemtrail research theories , trails left in the sky by high-flying govt. aircraft are dangerous chemical or biological agents deliberately sprayed for reasons undisclosed to ...
2
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249 views

Are current climate models too vague to be physically or scientifically meaningful? [closed]

In a recent article on the climate skeptic site Watts Up With That backed up with a published paper in Energy and Environment, Pat Frank argues that current climate simulation models are ...
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197 views

How are airplane contrails linked to climate change?

There are a wide range of opinions and articles on this question, and here are some excerpts from a blog on the point Artificial Weather Revealed by Post 9-11 Flight Groundings: In the August 2002 ...
2
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1answer
390 views

Have 95% of climate models over-forecast the global warming trend? [duplicate]

From Top Advisor To Australian Gov't Says Climate Change is a UN Conspiracy (slashdot.org) and Climate change a UN-led ruse, says Tony Abbott's business adviser Maurice Newman (The Sydney Morning ...
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66 views

How long does it take expanded Antarctic sea ice to reach New Zealand? [closed]

According to http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.recent.antarctic.png the Southern sea ice anomaly is currently +1.2*10^6 km^2. I'm calculating how long does it take this expansion ...
3
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1answer
381 views

Did Willie Soon fail to disclose a conflict of interest with the fossil fuel lobby?

Willie Soon recently co-authored a paper that criticised the big computer models used for many projections of future climate (which in turn have fed the IPCC process that drive consensus climate ...
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541 views

Did global warming exacerbate the Syrian conflict?

Newspapers have recently reported that research shows that Global Warming can now be assigned as a major contributor to the ongoing conflict in Syria. For example, The Independent: Climate change ...
8
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1answer
246 views

Are polar bears doing well despite a reduction in sea ice?

From Skeptical Science and many other sources: In conclusion, the reason polar bears have been classed as threatened comes from the impacts of future climate change on the bears’ habitat. Current ...
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209 views

Was 2014 the hottest year on record? [closed]

When the numbers were counted several prominent observers of climate claimed that the year 2014 was the hottest ever. For example, Scientific American reported: It’s official: 2014 has taken the ...
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396 views

Did someone using a private jet tell Americans their expectations are too high?

From twitter, a tweet that's going viral, including among climate change skeptics (action against climate change is being discussed at Davos): The cognitive dissonance in the first & last ...
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1k views

Is animal agriculture responsible for more greenhouse gas emissions than transportation?

Animal agriculture is responsible for 18 percent of greenhouse gas emissions, more than all transportation combined. By http://www.cowspiracy.com/facts/ from Fao.org. Spotlight: Livestock impacts on ...
2
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1answer
182 views

Are Easterbrook's oxygen-isotope paleo-temperature reconstructions credible?

In this video of a presentation given at a climate-skeptic Heartland Institute conference, Don Easterbrook presents his view of recent climate history. He compares his own projections of future ...
3
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2answers
504 views

Do RSS satellite samples show no warming since September 1996?

On the Climate Depot is a claim that Global Temperature Standstill Lengthens: No global warming for 17 years 10 months – Since Sept. 1996 (214 months) and this graph of RSS satellite data is ...
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1answer
274 views

Did global warming cause temperatures to drop because of polar vortex episodes?

On the Environmental Defense Fund website, this claim is made: This past winter’s polar vortex episode was caused by a persistent high pressure system that developed over western Canada, which ...
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1answer
130 views

Do higher CO₂ concentrations increase plant well-being?

Dr. Craig Idso claims increased levels of CO2 reduce the negative effects of a number of plant stresses including: high salinity, low light, high and low temperatures, insufficient water, air ...
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319 views

Did both higher temperatures and an ice age exist at CO₂ levels ten times the present?

The Climate Depot quotes Dr. Patrick Moore: When modern life evolved over 500 million years ago, CO₂ was more than 10 times higher than today, yet life flourished at this time. Then an Ice Age ...
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77 views

Has the climate not warmed in 17 years? [duplicate]

Some of the rhetoric around AGW denial/skepticism is that the Earth hasn't warmed in 10/16/17 years. For example: http://www.forbes.com/sites/jamestaylor/2013/09/26/as-its-global-warming-narrative-...
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393 views

Is there more global sea ice than 35 years ago?

On Mail Online, it is claimed: In fact, across the globe, there are about one million square kilometres more sea ice than 35 years ago, which is when satellite measurements began. Is that true? ...
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377 views

Was July 1936 the hottest month on record for mainland USA?

In July 2012, the US National Oceanic and Atmospheric Administration (NOAA) reported. The average temperature for the contiguous U.S. during July was 77.6°F, 3.3°F above the 20th century average, ...
5
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1answer
459 views

Does temperature drive CO₂?

The blog THE HOCKEY SCHTICK claims that "temperature drives CO2 levels, not man-made CO2". The paper "Atmospheric verification of anthropogenic CO2 emission trends" is cited as proof. The claim is ...
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334 views

Does Beck's chemical analysis of CO₂ discredit the Law Dome ice core findings?

On RealC02 summarizing Ernst-Georg Beck's work, this history of CO₂ levels are posted for the 19th century: SkepticalScience, on its "How reliable are CO₂ measurements?" page says "CO₂ levels are ...
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292 views

Did fertilising the ocean with 100 tons of iron sulphate increase the salmon catch by over 100,000 tons?

In July 2012 American businessman Russ George, dumped 100 tonnes of iron in the ocean off British Columbia to encourage plankton growth and thus increase salmon stocks (link). It is now claimed that ...
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Does unadjusted NASA climate data show no long-term global warming?

The Real Science blog by "Steven Goddard" claims that NASA have altered their data in the USA and other countries to show global warming. Right after the year 2000, NASA and NOAA dramatically ...
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Is Matt Ridley's assertion that the most extreme of the IPCC climate projections is based on very implausible assumptions correct?

Matt Ridley, the science writer who is often grouped with skeptics of warming and denialists despite asserting: man-made climate change is real but not likely to do much harm, let alone prove to ...
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431 views

Were Alpine glaciers much smaller in Roman times?

In a critique (or possibly a rant) against modern climate science, Swiss geologist Christian Schlüchter makes a very specific claim that Alpine glaciers were essentially non-existent (or very much ...
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50 views

volcanic CO₂ emission estimates increasing [closed]

I just read that estimates of CO₂ emissions form volcanos has increased from 100Mt to 600Mt/ year in the last decade or so. While still only a fraction of the natural cycle, in what ways does this ...
4
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2answers
212 views

Does Carbon Dioxide mix well in the atmosphere?

At Skeptical Science, they explain: Mauna Loa is often used as an example of rising carbon dioxide levels because its the longest, continuous series of directly measured atmospheric CO₂. The ...
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73 views

Has anthropogenic climate change been disproven? [duplicate]

Some scientists attribute non-terrestrial causes for climate change. Are they correct? For example, this scientist attributes current weather extremes to solar activity, moon orbit cycles and ...
6
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1answer
191 views

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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1answer
296 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 ...
4
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201 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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1k 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 ...
15
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1answer
552 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 ...
4
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3answers
323 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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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 ...
14
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1answer
657 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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622 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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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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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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993 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 ...