explain what this excerpts is saying
Systematic reviews of surveys and polling data by Nisbet and Myers (2007) and Brewer (2005) describe widespread misunderstanding regarding climate science extending back into the 1980s. Researchers have lamented the confusion between global warming and the ozone hole, investigated the role of media framing, and described how understanding global warming requires a complex grasp of scientific knowledge in many fields (Moser and Dilling 2007).
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