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


Shocking – Potential Senator wants to teach scientific method, climate scepticism in schools

The outlandish policy:

[One Nation] wants the teaching of climate science in schools to be based on “the scientific method of scepticism”.

It’s hard to overstate how disastrous this would be to the indoctrination program. Life on Earth depends on hiding alternate views from impressionable minds. Students should continue to be taught that scientists are of one-mind, or they may grow up to think scientists are supposed to be skeptical, instead of gullible.

How did it come to this?

Malcolm Roberts

The man responsible for this travesty is Malcolm Roberts who most skeptics will have come across as Project Leader for the Galileo Movement. He  has been in the trenches of the climate debate for years in Australia, and he’s the second name on the One Nation ticket in Queensland for the Senate. He has been remarkably tenacious. The man has drive and energy. (See for yourself at his site.) He also has a BE (Honours in  Mining) and  an MBA from the Uni of Chicago Booth School of Business.

The Turnbull coup converted the Liberals to a center left party, leaving a galactic vacuum in Australia on the right. Pauline Hansen did so well, getting 1.2 [...]

The outrage! One third of US teachers bring climate denial to the classroom

They warn that the results may floor you. Strap yourself in. The National Centre for Science Education (NCSE) surveyed 1500 teachers across the US, and were shocked that a third bring dangerous climate material in to the class.

“At least one in three teachers bring climate change denial into the classroom, claiming that many scientists believe climate change is not caused by humans” says NCSE programs and policy director Josh Rosenau.

Frankly I am amazed. After twenty years of repeating the consensus message how is it that so many teachers are still unable to recite the permitted phrasing?  (And especially in a survey where everyone knows what the right answer is!).

Put on your helmet. As many as half of US teachers actually allow students to discuss the controversy. Unthinkable!

Worse, half of the surveyed teachers have allowed students to discuss the supposed ‘controversy’ over climate change without guiding students to the scientifically supported conclusion.” Scarier still: three out of five teachers were unaware of, or actively misinformed about, the near total scientific consensus on climate change.

Sorry, did I say controversy? I meant “controversy” (any resemblance this debate may have to a real debate is [...]

Models get the core assumptions wrong– – the hot spot is missing

This is part of a series that Tony Cox and I are doing that references the most important points and papers, as a definitive resource about the evidence. The missing hotspot is not just another flaw in the theory, it proves the models are wrong: not just “unverified”, not just “uncertain”, but failed. Apologies to those who feel I harp on about this! This is a condensed review, squishing years of a scientific battleground down to it’s bare bones… — Jo

It is not well known that even the IPCC agrees that the direct effects of CO2 will only increase world temperatures by 1.2°C. All of the projections above that (3.3°C , 6°C  etc) come from model projections based on assumptions of what water vapor and clouds will do (these are the feedback effects of the original 1.2°C).[i] Are the feedbacks correct?

If the IPCC models are right about the feedbacks, we would see a hot spot 10km above the tropics. The theory is that with more heat, more water will evaporate and rise, keeping relative humidity constant at all heights in the troposphere. The point has been conclusively tested with 28 million weather balloons since 1959.[ii]



Australian teachers — pick up your free copy of Ian Plimer’s new book

 The Education Department and the CSIRO push their propaganda and scare our children with apocalyptic, unscientific scenarios.

They are even trying to target pre-schoolers. The ABC has accepted grants from the Climate Change Foundation to work the Climate Change message into ‘DirtGirl’, an ABC4Kids TV. Then there are demonstrations of bias like this from a school in Sydney.

They’re trying to train the next generation to “think” their way. We’d be mad to let them get away with it.

Thanks to the Gallileo Movement and donors, 300 FREE copies of Professor Ian Pilmer’s new book ‘How to get expelled from school’, are available to schools in Australia.

 The Galileo Movement’s aim is to expose the unscientific claims made by climate change scientists and political attempts to unnecessarily control our freedom and future prosperity. If you are a teacher or you know one, you can help ensure that your local school library has a balance of books on climate change science.

Can you convince your Federal, State or Local member to talk the local school on your behalf?

The books are available to schools within Australia, all [...]

The Travesty of the Missing Heat — deep ocean or outer space?

(See the Hammer link below, for more information on this graphic).

If there is one topic that trumps all others in climate science, it’s ocean heat.

If there is a planetary imbalance in energy, and Earth is acquiring more heat than it’s losing, we ought to be able to find that heat. Energy can not be created nor destroyed. It has to be somewhere.

On this Water-Planet, virtually every scientist agrees that the vast bulk of the extra energy ought be stored in the water. The oceans cover 70% of the surface, and are 4km deep; water has a high heat capacity (meaning it can store a lot of energy), and, because water flows quickly (unlike rock), turbulence and mixing can take that heat energy away from the surface.

Every skeptic (and taxpayer) ought to know that since 2003 (when we started measuring oceans properly) the oceans have been cooling:  Douglass and Knox 2010.

Five years of planetary heating amounts to a massive amount of energy. That’s 2,000 days of the sun bearing down on an atmosphere with growing levels of CO2. According to the IPCC favored models, the extra heat stored should be 0.7 x [...]

The chemistry of ocean pH and “acidification”

The ocean acidification threat is a big can of worms. I asked Professor Brice Bosnich to help create a quick reference page on the chemistry and was pleased he could find the time to help. Here’s everything you wanted to know about the basics…

He explains what pH means, and points out that:

Ocean pH varies by 0.3 naturally. Claims of acidification since 1750 are based on dubious models and few observations.

There are reasons to assume that marine life will not be overly affected by an increase in ocean acidity due to atmospheric carbon dioxide:

Ocean life evolved and survived far higher levels of CO2 for millions of years in the past. Marine organisms actively create carbonate shells (using energy) which means crustacea, corals and molluscs aren’t automatically prey to pH changes in the same way that say a limestone rock would be. The world’s oceans may have warmed a mere 0.17C since 1955, hardly a significant threat to marine life.

We also find out that acidic water is added to the ocean from rainfall and floods (and he explains why raindrops will always be acidic).

There are more pressing threats. — Jo


Guest Post by Professor [...]