A poll that shows a 7% increase in climate science being unclear is probably just noise. It’s a stretch to say there is a trend with two years of data.
Also, the question isn’t very clear - do you believe climate science is unclear? Well, what aspect of it? If the question were more specific, e.g. Do you think that anthropogenic carbon emissions are primarily responsible for rising global temperatures? then you might see a much different response. Even the IPCC reports quantify the level of uncertainty in their models and predictions (AGW is one of the few where they have basically 100% confidence).
Scientists have disagreements all the time, and if the question is about science in general, then it’s easy to see how the public would view that as a difference in opinion. Again, it seems like a poorly worded question because it leaves a lot of room for interpretation.
Sure, there are anti-vaxxers here, and climate deniers in spades. But I also feel this survey is a tad alarmist and methodologically flawed. And to suggest a trend with two data points is premature.
