[Illustrations, footnotes and references available in PDF version]
1. Research has shown that a focus on just carbon dioxide and a few other greenhouse gases as the dominant human influence on climate is too narrow, and misses other important human influences.
2. The phrases “global warming” and “climate change” are not the same. Global warming is a subset of climate change.
3. The prediction (or projection) of regional weather, including extremes, decades into the future is far more difficult than commonly assumed. In addition, the attribution of extreme events to a particular subset of climate forcings is scientifically incomplete if the research ignores other relevant human and natural causes of extreme weather events.
4. The climate science assessments of the IPCC and CCSP, as well as the various statements issued by the AGU, AMS, and NRC, are completed by a small subset of climate scientists who are often the same individuals in each case.