Hand it back
The Sydney Morning Herald interviewed 35 economists and found 30 of them favored carbon price (tax, ETS or some mixture) over Direct Action. It quotes Chris Caton as saying “Any economist who didn’t opt for emissions trading “should hand his degree back”, says Chris Caton.
I’d take that a step further.
Anyone with a natural science degree in any field will find plenty of examples of denialist lies on everything from basic physics to bushfires. More generally, denialists have attacked the entire scientific enterprise with absurd conspiracy theories. No-one who endorses these attacks, explicitly or tacitly, deserves to call themselves a scientist.
Similarly, anyone with a degree that includes even minimal exposure to statistics should understand that denialists were misusing the concept of statistical significance when they claimed, a few years back there had been no significant warming since 1995. Subsequent hacks have had to move the goalposts forward to 1997. And that’s just one example of the cherrypicking dishonesty rife on the denialist side of the debate. So, anyone who claims to be a sceptic and hasn’t distanced themselves from claims like these should send back their math/stat degree.
Then there are those with university degrees, but without the training in science, maths or economics to assess the key issues independently. Anyone with a university education ought to be able to recognise the limits of their own expertise, and to be able to distinguish between bogus sources of information and the products of genuine peer-reviewed research. If they prefer the kind of nonsense circulated on denialist websites to the conclusions of scientific research, they should hand in their degrees and instead obtain one of the many qualifications available, for a modest fee and no work, on internet sites like those listed here.