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Posted on 29 April 2021 by John Cook, BaerbelW

Welcome!

Skeptical Science is based on the notion that science by its very nature is skeptical. So what is skepticism? Skepticism is not doubt! Skepticism is the open-minded consideration of something based on the evidence. A skeptic doesn't have a preference for what the truth is, a preferred answer. They want to discover what the truth is based on the balance of all evidence. You look at all the facts before coming to a conclusion. In the case of climate science, our understanding of climate comes from considering the full body of evidence and being 'skeptical' for well over a century.

In contrast, climate denialism is closed minded. It thinks it knows the truth and wants to interpret the evidence to suit that. It has a preferred answer and wants to look at everything in that light. So it looks at small pieces of the puzzle while neglecting the full picture. Climate 'skeptics' vigorously attack any evidence for man-made global warming yet uncritically embrace any argument, op-ed, blog or study that supposedly refutes global warming. If you began with a position of climate 'skepticism' then cherry pick the data that supports your view while fighting tooth and nail against any evidence that contradicts that position, that's not genuine scientific skepticism.

If 99 pieces of evidence support an idea and 1 doesn't, a skeptic says 'that idea is probably true'. A denier says 'Ahah, that idea is false'.

Skepticism is a process, denial is a position.

So the approach of Skeptical Science is as follows. It looks at the many climate myths , exposes the techniques and fallacies used to distort the science and then puts them in their proper context by presenting the full picture. The climate myths are listed by popularity (eg - how often each argument appears in online articles) or with fixed numbers you can use for permanent references. For the more organised mind, they're also sorted into taxonomic categories.

Good starting points for newbies

If you're new to the climate debate (or are of the mind that there's no evidence for man-made global warming), a good starting point is Warming Indicators which lays out the evidence that warming is happening and the follow-up article, 10 Human Fingerprint s on Climate Change which lays out the evidence that humans are the cause. More detail is available in empirical evidence that humans are causing global warming. Contrary to what you may have heard, the case for man-made global warming doesn't hang on models or theory - it's built on direct measurements of many different parts of the climate, past and present, all pointing to a single, coherent answer.

Another good starting point is the SkS climate graphics page , with each graphic featuring links to informative SkS material. Good introductions to climate science can be found at Global Warming in a Nutshell and The History of Climate Science . You could lose yourself for hours in those pages!

Smart Phone Apps

Note (December 2019): Our apps are currently "out of order" as they unfortunately are no longer maintained. They may still work if already installed but have vanished from the app stores. We are looking into options to make them available again. Please directly use the list of most used climate myths instead for the time being or download PDF versions via zip-files provided here. Thanks!

For smart phone users, the rebuttals to all the skeptic arguments are also availa ble on a number of mobile platforms. The first Skeptical Science app was an iPhone app, released in February 2010. This is updated regularly with the latest content from the website and very accessible in a beautifully designed interface by Shine Technologies. Shine Tech then went on to create a similar Android app which has some extra features missing from the iPhone version. A Nokia app was also created by Jean-François Barsoum (this was one of the 10 finalists in the Calling All Innovators competition).

As well as the list of rebuttals, Skeptical Science also has a blog where the latest research and developments are examined and discussed. Comments are welcome and the level of discussion is of a fairly high quality thanks to a fairly strict Comments Policy. You need to register a user account to post comments. One thing many regulars are not aware of is you can edit your user account details (to get to this page, click on your username in the left margin).

Keep up to date by email, RSS, Facebook or Twitter

To keep up to date on latest additions to the website, sign up to receive new blog posts by email. There's an RSS feed for blog posts and for the engaged commenter, a feed for new user comments. We recommend you follow Skeptical Science on Twitter to keep up with the latest blog posts and other interesting climate links. Blog posts from Skeptical Science and relevant articles from many other reliable sources are also shared in a steady stream via our Facebook page.

About John Cook

For those wondering about who runs Skeptical Science, the website was founded by a Research Fellow at the John Cook, Climate Change Communication Research Hub at Monash University and adjunct faculty at George Mason University. John originally obtained a Bachelor of Science at the University of Queensland, achieving First Class Honours with a major in physics.

John is the author of a number of books and scientific papers including being lead-author of the paper In 2014, John won an award for Best Australian Science Writing, published by the University of New South Wales. In the summer of 2016 John Quantifying the Consensus on anthropogenic global warming in the scientific literature, which was tweeted by President Obama and was awarded the best paper published in Environmental Research Letters in 2013. PhD in cognitive psychology, researching how people think about climate change. finished his

The SkS Team

There are many more who make invaluable contributions to Skeptical Science with a number of authors who write blog posts, rebuttals and other articles. They contribute by moderating the comments sections, editing and proofreading posts, sharing information with visitors, responding to emails, and providing technical support. There are also many regular commenters whose feedback has helped to improve and hone the website's content. Translators from all over the world have translated selected content into 20 different languages.

In 2011, Skeptical Science won the Australian Museum Eureka Prize for Advancement of Climate Change Knowledge. In May 2016 Skeptical Science received the "Friend of the Planet" award from the National Center of Science Education (NCSE).

There is no funding to maintain Skeptical Science other than Paypal donations to cover hosting & domain expenses. John Cook has no affiliations with any organisations or political groups other than academic institutions such as Monash University. Skeptical Science is strictly a labour of love. The website design was created by Wendy Cook.
Update April 2021 - An interactive version of The Story of Skeptical Science

For the 2020 Fall Meeting of the American Geophysical Union (AGU) John Cook and Bärbel Winkler submited an abstract to session SY043 - Communication of Science - Practice, Research and Reflection convened by Heidi Roop, Priyanka Kushwaha, Kristin Timm and Erin Leckey. It seemed a good fit to submit "The Story of Skeptical Science" to, something we had also done earlier in 2020 for a comparable session at the European Geosciences Union (virtual) meeting. The EGU-presentation consisted of a " display" - basically a PDF created from a PPTX-presentation accompanied by a live chat-session. At AGU it was an "eLightning" session, which was a combination of a 3 minute talk and an interactive "iPoster". So, while the content is basically the same, the format of the presentation is completely different. You can check it out yourself here or by clicking on the poster's screenshot. If the iPoster doesn't load, you can try this "mock up" PPSX-version instead.

As the presentation shows, Skeptical Science has evolved from a small blog into a community of intelligent, engaged people with a commitment to science and our climate since its creation in 2007 . Many of the contributors are working scientists who have many published scientific papers to their name. All the work is done as volunteers and a running joke among the author community is that we are being paid peanuts and they haven't even been delivered yet!

In August 2017 we published a series of posts to highlight SkS' 10th birthday. This series of short articles gives a good overview of how SkS evolved from a one-author-blog to the global volunteer effort it is today.

Note: to access the earlier version of this post and to read the comments posted until April 2015 please check out Newcomers start here

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3. tommyb86Further to Tom's last graph, that big change during world war 2 has been identified quite clearly. Most SST records were taken by UK & US ships in the early period of the record. The UK used mainly the bucket method while the US used engine inlets. During WWII the proportion of ships contributing SST records switched to mainly US ships. The transition out of that has been narrowed down to Aug 1945.Additionally, there does seem to be indications that there was a general warming in higher latitudes during the 20's & 30's. So the spike is quite likely to be a mix of several factors including climate and instrumentation.Contrast the different latitude bands from GISS: Why the bigger spike in the tropics/southern extratropics? That is mainly ocean, and the biggest part of that ocean is the Pacific. The big stomping ground of the US Navy in WWII.

The Consensus Project Website

THE ESCALATOR

(free to republish)

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Archives Posted on 29 April 2021 by John Cook, BaerbelW Skeptical Science is based on the notion that science by its very nature is skeptical. So what is skepticism? Skepticism is not doubt! Skepticism is the open-minded consideration of something based on the evidence.

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Etude d'un graphe

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Fake News

FOLLOW THE PATH

start

Look

Question

Clue

Send a letter

Play solution

Make a graph

Do you see what's wrong in this graph ?

The development of the number of student at second year of Medicine University in France by the Ministry for Higher education and Research L'effort sur la formation des futurs médecins, dans un contexte sanitaire difficile, n'a jamais été aussi important. Avec #MaSanté2022, la barre des 10 500 étudiants admis en 2e année de médecine sera franchie à la rentrée 2021, soit +14% par rapport à l'an dernier. pic.twitter.com/V6uMPBstWv- Frédérique Vidal (@VidalFrederique) May 7, 2021

We give u a clue :

Make ur own graph with the same numbers and compare !

How did they make the wrong graph ?

Look the top of ur graphe

Send us a text explain how do you think they did that

Send us a text explain what's wrong in this graph.

Make us a wrong graph using the same method and send it to us !

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Fake News FOLLOW THE PATH start Look Question Clue Send a letter Play solution Make a graph Do you see what's wrong in this graph ? The development of the number of student at second year of Medicine University in France by the Ministry for Higher education and Research L'effort sur la formation des futurs médecins, dans un contexte sanitaire difficile, n'a jamais été aussi important.

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Les données en maths

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Parce qu'il faut bien démarrer quelque part... et parce qu'il faut parfois aussi reprendre les bases, voici quelques articles pour (r)entrer dans les contenus critiques que nous proposons sur ce site :

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03 Introduction Activité 2 Echelle de preuve (exemple)