A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


The Skeptics Handbook

Think it has been debunked? See here.

The Skeptics Handbook II

Climate Money Paper




The nerds have the numbers on precious metals investments on the ASX



Not a 100% believer? Even borderline climate apostates like Pielke must be punished in the witchhunt

The witchhunt over tenuous connections to fossil fuel funding wants to do a lot more than just silence a few people. The aim is to maintain the global chill over all of academia. That’s why it’s so important we support the individuals under fire, and don’t give in.

Congratulations to Richard Lindzen, John Christy, Judith Curry, Steven Hayward, Roger Pielke, David Legates, and Robert Balling. All of them have been named to be investigated and lined up for character assassination like Willie Soon. Obviously they are effective and convincing speakers, and a threat to the climate-industry.

Stephen Hayward is flattered, and mocks the critics: “Are You Now or Have You Ever Been a Climate Skeptic?”

“Let’s start by axing a simple question: If I say “two plus two equals four,” does the truth of that proposition depend on whether I’ve received a grant from the Charles G. Koch Foundation? Apparently it does for Rep. Raul Grijalva (D-AZ), the ranking member of the House Committee on Natural Resources. He has sent letters to seven universities targeting seven academics who, according to the Democratic spokesman for the committee, were chosen because they seem “to have the most impact on policy in the [...]

Even with the best models, warmest decades, most CO2: Models are proven failures

This beautiful graph was posted at Roy Spencer’s and WattsUp, and no skeptic should miss it. I’m not sure if everyone appreciates just how piquant, complete and utter the failure is here. There are no excuses left. This is as good as it gets for climate modelers in 2013.

John Christy used the best and latest models, he used all the models available, he has graphed the period of the fastest warming and during the times humans have emitted the most CO2. This is also the best data we have. If ever any model was to show the smallest skill, this would be it. None do.

Scores of models, millions of data-points, more CO2 emitted than ever before, and the models crash and burn. | Graph: John Christy. Data: KMNI.

Don’t underestimate the importance of the blue-green circles and squares that mark the “observations”. These are millions of radiosondes, and two independent satellite records. They agree. There is no wiggle room, no overlap.

Any sane modeler can only ask: “But how can the climate modelers pretend their models are working?” Afterall, predicting the known past with a model is not-too-hard; the modeler tweaks the assumptions, fiddles with the fudge [...]

Last 30 years shows climate feedbacks are zero (at best)

Let’s be as generous as we can. The IPCC say feedbacks amplify CO2′s warming by a factor of about three.

Without the amplification from positive feedback there is no crisis

So being nice people, let’s assume it’s warmed since 1979 and assume that it was all due to carbon dioxide. If so, that means feedbacks are …. zero. There goes that prediction of 3.3ºC. Feedbacks are the name of the game. If carbon dioxide doesn’t trigger off powerful positive feedbacks, there was and is no crisis. Even James Hansen would agree — inasmuch as he himself said that CO2 would directly cause about 1.2ºC of warming if it doubled, without any feedbacks (Hansen 1984).

Consider the warming from1979 to 2007, when we measured temperatures using satellites and not corrupted and adjusted land thermometers. Douglass and Christy (2008) point out that, given how much CO2 levels increased in that time, the warming only amounts to what the IPCC scientists predict we should get from CO2 alone, from the direct effect of CO2, and not from the effect of CO2 plus positive feedbacks.

The warming trend expected from CO2 without any feedbacks at all is 0.07 ºC/decade. The trends [...]