Enter a term in the search box to find its definition.
Use the controls in the far right panel to increase or decrease the number of terms automatically displayed (or to completely turn that feature off).
|Home Arguments Software Resources Comments The Consensus Project Translations About Donate|
Cook, J., Oreskes, N., Doran, P. T., Anderegg, W. R., Verheggen, B., Maibach, E. W., Carlton, J. S., Lewandowsky, S., Skuce, A. G., Green, S. A., ... & Nuccitelli, D. (2016). Consensus on consensus: a synthesis of consensus estimates on human-caused global warming. Environmental Research Letters, 11(4), 048002.
Cook, J., Nuccitelli, D., Green, S.A., Richardson, M., Winkler, B., Painting, R., Way, R., Jacobs, P., & Skuce, A. (2013). Quantifying the consensus on anthropogenic global warming in the scientific literature. Environmental Research Letters, 8(2), 024024+
Jacobs, P. H., Jokimäki, A., Rice, K., Green, S. A., & Winkler, B. (2016). Polluted Discourse: Communication and Myths in a Climate of Denial. In Communicating Climate-Change and Natural Hazard Risk and Cultivating Resilience (pp. 37-54). Springer International Publishing. Link to abstract
Recent blog posts
Posted on 7 December 2016 by BaerbelW &
At a guess, many of you reading this post are already making good personal choices to help mitigate climate change. Some of you would perhaps like to do more. So, here are some suggestions where you can get actively involved either via crowdfunding, where you make a monetary donation or via crowdsourcing, where you donate your or your computer's time to sift through different sets of data.
This post is divided into three sections:
Ongoing crowdfunding - sites and groups listed here are continously looking for donations
Shortterm crowdfunding - these are projects with a target amount and a set deadline
Crowdsourcing - projects looking for your (or your computer's) time
Posted on 29 November 2016 by John Mason & BaerbelW
Dear Mr President-elect,
On 6 Nov 2012, at 11:15 am, you tweeted:
We'd like to take you on a quick tour back through the ages, because the early understanding of Earth's climate - and the role that carbon has to play in it - came from the West, not the East. Let's run through it quickly.
In 1800, British astronomer William Herschel first measured the heat that occurs in the warm – now known as infra-red (IR) – part of the spectrum. In 1824, French engineer Jean Baptiste Joseph Fourier calculated that Earth should be colder than it is, at its orbital distance from the Sun. Today, it is common knowledge that outgoing IR radiation is emitted by the Earth's surface in response to heating by the Sun. But Fourier was the first to figure out that the IR was being slowed down during its journey back out to space. The air, he said, must act as a form of insulating blanket, keeping the planet warm. Smart guy.
This was just two years before Samuel Morey patented the first internal combustion engine.
In 1861, Anglo-Irish physicist John Tyndall observed that some atmospheric gases were transparent to IR radiation. But he found that others, like water vapor and carbon dioxide, were powerful IR absorbers. He was the first to propose that changes in the amount of carbon dioxide in the atmosphere could influence the Earth's climate. In 1896, Swedish scientist Svante Arrhenius took it further. He made the first detailed calculations to see what a doubling of carbon dioxide levels might do to temperatures. His answer was a 5-6°C increase in the average global temperature. His ‘hot-house theory’ was set out for the first time in 1908 in his popular book ‘Worlds in the Making’.
In 1909, American astronomer Andrew Douglass developed the techniques of studying tree-rings and was the first to find the connection between tree ring widths and climate. In 1931, American physicist E.O Hulburt ran calculations to determine the effect of doubling carbon dioxide with the added burden of water vapor. His figure? 4°C of warming. In 1938, English engineer Guy Callendar discovered evidence of a warming temperature trend in the early twentieth century. He also found that CO2 levels were increasing and he warned that over the coming centuries there could be a climate shift to a permanently warmer state.
Posted on 20 October 2016 by BaerbelW &
The next run of our free online course, Making Sense of Climate Science Denial, started on Oct. 18 and will be open until March 7, 2017 as a self-paced course. This means that there are no deadlines apart from the final day of the MOOC and that you can work through all of the material as your time allows. If you participated in one of the earlier iterations but missed some deadlines, this is the opportunity to see it through.
The MOOC (Massive Open Online Course) is a collaboration between Skeptical Science and The University of Queensland, that takes an interdisciplinary look at climate science denial. We explain the psychological drivers of denial, debunk many of the most common myths about climate change and explore the scientific research into how to respond to climate misinformation.
Posted on 3 May 2016 by BaerbelW & jg
Chances are high that you will have come across somebody somewhere on the internet who still doesn't accept the overwhelming scientific consensus on human-caused global warming. That somebody may well have used a veritable firehose of falsehoods - usually referred to as a gish-gallop - where a big list of myths is fired off in quick succession. Creating such a gish-gallop is quick & easy and the urge to try and debunk all the misinformation it contains is often quite strong, but it's also a very time-consuming task to undertake. One time-saving option to tackle it, is to just concentrate on the most egregious instances of misinformation as examples of how the writer tries to mislead his readers and to ignore the rest. But, this has the disadvantage that others might accuse you of cherry-picking what you chose to debunk.
So, what other options do you have to fairly quickly dispense with such a firehose of falsehoods?
Option #1 - The Fact-Myth-Fallacy overview
Our MOOC Denial101x debunked around 50 of the most often heard myths related to climate science using the recipe to start out with the fact, followed by a short mention of the myth (with a warning!) and finishing off with explaining the fallacy employed. A condensed version of these debunkings is available as a four-page-PDF which you can download from here:
The fallacies are based on the five techniques used by science deniers to distort facts: fake experts, logical fallacies, impossible expectations, cherry picking evidence, and conspiracy theories. The acronym FLICC is an easy way to remember these techniques.
Posted on 23 February 2016 by BaerbelW &
Have you ever struggled with the communication of climate change uncertainties? Are you frustrated by climate sceptics using uncertainty - inherent in any area of complex science - as a justification for delaying policy responses? Then the new ‘Uncertainty Handbook’ - a collaboration between the University of Bristol and Climate Outreach (former COIN) - is for you.
The Handbook distills the most important research findings and expert advice on communicating uncertainty into a few pages of practical, easy-to-apply techniques, providing scientists, policymakers and campaigners with the tools they need to communicate more effectively around climate change. Download the report here, and check out our 12 principles for more effectively communicating climate change uncertainty here.
The Uncertainty Handbook was authored by Dr. Adam Corner (Climate Outreach), Professor Stephan Lewandowsky (University of Bristol), Dr Mary Phillips (University of Bristol) and Olga Roberts (Climate Outreach). All are experts in their fields and have expertise relating to the role of uncertainty in climate change or how best to communicate it.
Posted on 29 December 2015 by BaerbelW &
2015 has been yet another very productive year for the all volunteer Skeptical Science team. From publishing scientific papers to co-producing a MOOC we were kept rather busy throughout the year. This post is a wrap-up of what all we’ve been up to and includes these sections:
As in previous years, members of the SkS-team contributed to ongoing scientific research and (co)authored several important papers, published books and a book chapter.
Kevin Cowtan published a paper (Cowtan et al. 2015) which showed that global climate models are even more accurate than previously thought. Several members of the SkS-team were among the co-authors: Zeke Hausfather, Peter Jacobs, Martin Stolpe and Robert Way.
Dana Nuccitelli and John Cook were co-authors on Benestad et al. (2015) which found common errors among the 3% of climate papers that reject the global warming consensus.
John Cook published Misinformation and How to Correct It (Cook et al. 2015) a multi-discplinary review of misinformation research. He was asked to anticipate where future research into misinformation might head - which is a tough ask. He approached it creatively by answering the question what he would like to research in the future.
John also is a co-author on Recurrent Fury: Conspiratorial Discourse in the Blogosphere Triggered by Research on the Role of Conspiracist Ideation in Climate Denial (Lewandowsky et al. 2015) which examined the comments on climate science-denying blogs and found strong evidence of widespread conspiratorial thinking. The study looks at the comments made in response to a previous paper linking science denial and conspiracy theories.
In "Misdiagnosis of earth climate sensitivity based on energy balance model results" Mark Richardson - together with Zeke Hausfather, Dana Nuccitelli, Ken Rice and John P. Abraham - explained the many shortcomings in Monckton et al. (2015). They found that differences could be explained because Monckton et al. relied a lot on a narrative approach (aka storytelling) while most other studies use physics and real-world measurements where possible.
Dana Nuccitelli wrote and published the book Climatology versus Pseudoscience: Exposing the Failed Predictions of Global Warming Skeptics which covers a wide range of climate-related topics, starting with a history of some key discoveries in the field of climate science beginning nearly 200 years ago. Along the way it debunks some common climate myths, progressing forward in time to the 1970s, when scientists’ ability to model the global climate began to advance rapidly. It examines the accuracy of a variety of global warming projections, starting with J.S. Sawyer in 1972, through the recent IPCC reports, as well as some predictions by contrarians like Richard Lindzen.
Posted on 28 October 2015 by BaerbelW &
If you are a long-time reader of Skeptical Science you'll be aware of the glossary functionality which automatically displays definitions of scientific terms when you have the cursor hover above an underlined term. This neat functionality was created and announced by Bob Lacatena and went live in February 2013.
The Skeptical Science team has had on and off discussions about the need for a kind of bibliography for all the scientific papers we regularly reference in our blog posts and rebuttals. During one of these discussions Phil mentioned that it would be nice to have the relevant reference immediately displayed in a pop-up-box. And so, the penny dropped and we realised that we already had this functionality available at Skeptical Science: the glossary!
I went ahead and did a quick test to see if the idea could work out and added an entry for Cook et al. (2013) to the glossary. Once the entry had been added and a page found where the spelling of the "term" - i.e. the reference - fitted the glossary entry, this immediately worked as intended and the citation was displayed in the right-hand margin of the page as soon as the cursor hovered above the reference:
You should be able to test this yourself with the above reference to our consensus study. Hover the cursor above it and see what happens! If it doesn't work, check your glossary settings via the "Look up a Term" panel shown at the bottom of this page:
Posted on 6 October 2015 by BaerbelW &
Thanks a lot to all of you who participated in our reader survey, providing lots of feedback for us to sift through and mull over! We'll share some snapshots of the results in this post and include some of your written comments, selected from those responses where you've given us your consent to share them.
We received 314 filled out surveys over the course of a week with most of them coming in the first 3 days after we posted the link. About 30 different countries show up in the results, with the US, Australia, the UK and Canada listed the most often which also makes English the most often mentioned first language.
Selected comments about blog posts:
Selected comments about rebuttals:
Posted on 15 September 2015 by BaerbelW &
Update: Our survey was closed on Sept. 22 - thanks to all of you who participated!
Since its inception in 2007 Skeptical Science has changed quite a lot and many resources have been added over the years. Our "Welcome to Skeptical Science" post gives a rough overview of which resources have been made available by John Cook and the dedicated team of volunteers from across the globe.
Many of the resources and features have been added because we hoped that they would be useful for you - our readers - and many of the comments you share - or the emails you write - are an indication that this is in fact the case. But, we'd like to dig deeper and get a better handle on which features are the most valuable for you or where we can improve Skeptical Science's content. This is why we put together the Skeptical Science Reader Survey (as of Sept. 22 the survey has been closed):
The survey shouldn't take longer than 5 to 10 minutes to complete. You'll find questions about which sections of Skeptical Science you regularly visit and how valuable you find them.
Most questions ask for feedback via a scale from 0 to 5 like the ones for blog posts shown on the left.
But, we also included free text questions where you can provide additional feedback about the resources or Skeptical Science in general.
So, thanks for taking our survey and helping us to make Skeptical Science better!
Here is the link to the survey: Skeptical Science Reader Survey
Posted on 3 September 2015 by LarryM & BaerbelW
The "Denial101x - Making Sense of Climate Science Denial" MOOC (Massive Open Online Course) is now available as a self-paced course that anyone can take at any time. The course was produced by the all-volunteer Skeptical Science team and the University of Queensland, and hosted on the edX-platform. The lectures and expert interviews provide a unique resource for countering climate myths, learning effective myth-debunking techniques, and learning the basics of climate science in easily digestible bites. These resources are now available in an organized and easily searched format. Use them often!
MOOC videos. The collection of Denial101x videos listed below is organized by week and by topic. There are 81 lectures on focused topics, each about 5-7 minutes in length, plus 40 full interviews with experts in climate science and climate communication. The video playlist is also available on the Denial101x YouTube channel.
MOOC references. Each Denial101x lecture is supported by peer-reviewed research. A comprehensive list of references is available, with links to the corresponding papers.
MOOC-related blog posts:
Other SkS resources:
Index of videos by week
|© Copyright 2016 John Cook|
|Home | Links | Translations | About Us | Contact Us|