If one runs around using a term like "deny global warming" it immediately exposes them as "not a scientist".  Our climate warms and it cools and it changes its composition slightly over time.  They can never to get the level of cause; they resort to name calling and inflated and often dismissive language, the way the Nazi's used to dismiss moral and intellectual appeals counter to that socialist government's "programs".

Dismissiveness is a first sign of an intellectual charlatan. 

I've found some people are beyond reason when it comes to this topic.  They operate reflexively, using base stem function alone.  

They also fall into other intellectual defects such as parroting others (actual scientists) and even plagurize their writing.