1. What do 97% of Climate Scientists agree on?

97%

We’re told that 97% of the worlds climate scientists agree that climate change is real, human caused and dangerous.

Everyone, including former president Obama, repeat it:

Obama

This assertion is the basis for the widely spread conclusion that “the debate is over, and there’s no time for debate with ‘the Flat Earth Society”.

Any critical voices can presumably be dismissed as “tin-foiled hats”, conspiracy theorists or Big Oil-pay-offs, and merely part of the miniscule minority that’s typically prepared to be skeptical of anything, even gravity, evolution or the link between smoking and cancer.

It’s a powerful layman’s argument, but is it true?

How do we know that it’s 97%, and what they agree on?

The prestigious institution NASAGISS (GISS stands for Goddard Institute for Space Studies, have the following statement onn their website:

Multiple studies published in peer-reviewed scientific journals show that 97 percent or more of actively publishing climate scientists agree: Climate-warming trends over the past century are very likely due to human activities.”

This is pretty much what the UN Climate Panel, or more correctly the Intergovernmental Panel on Climate Change (IPCC), has stated: Mankind is very likely the cause of att least 50% of the global warming since 1950.

I don’t believe many people have actually read any of these studies, possibly not even anyone at NASA-GISS – which is not, by the way, the same organization that sent men to the moon – because they do not at all show what is claimed. And they use astonishingly bad methodology.

It’s perhaps understandable that journalists, politicians and everybody else let’s this pass without any fact-checking, but it’s remarkable that these studies are presented as scientific support for consensus on climate change.