http://arstechnica.com/science/2014/01/ ... o-forward/<http://arstechnica.com/science/2014/01/climate-scientists-defamation-suit-allowed-to-go-forward/>
Calling a scientist a fraud could be defamatory. *Quote:* Accusing a scientist of conducting his research fraudulently, manipulating his data to achieve a predetermined or political outcome, or purposefully distorting the scientific truth are factual allegations. They go to the heart of scientific integrity. They can be proven true or false. If false, they are defamatory. If made with actual malice, they are actionable.
