A huge percentage of them didn't actually. Most of the current researchers into climate change have always worked as researchers in this field. You have to remember the field has been around since the 60s, but has rapidly begun to attract PHD students and others because of the vast amounts of grant money devoted to it in recent years.
> Where are you getting your global warming papers from?
Nature and Science. Where are you getting your Agile papers from?
I think you are very likely wrong about the causal link there: the way science organizations allocate money is that they decide what is important to study, so it should make sense that important fields are the ones that attract money and people. And there's a general scientific sense in which some fields are more important to the progress of science than others. But that's just how it should be, and less important fields should have less money. So you observe the expected behaviour (important fields get more research effort), but you think you're seeing a pathological behaviour instead. After all, what evidence would you accept that climate science deserves that particular level of funding?
However, I think there is a massive causal link there. If you're looking to do your PHD and your advisor tells you to research climate change because of all the grant money, that seems like a massive link to me. Then once you have your PHD on climate change, the obvious next step for funding is to do more research on climate change.
Although really what I was trying to get at originally is simply that multiple climate change scientists endorsing each other on the existence of climate change does not make their work any more convincing than just a single author in a good journal discussing Agile. It went on a major windy path, but hopefully you at least understand my point even if you disagree.
That's very flawed reasoning: Do you think these scientists didn't have a job before?
> I was also thinking about the papers on Agile vs global warming, and the Agile papers generally read as far more balanced and generally go into much deeper detail than any global warming paper.
Where are you getting your global warming papers from?