The Koch brothers are leading funders of climate change contrarians / deniers / faux skeptics (see documentation in the UU - UNO Climate Portal essay HERE). (climate.uu-uno.org)
After I have given climate change presentations, I have actually had climate change contrarians challenge me with statements like «Scientific consensus does not matter.» (climatechangecomedian.com)
So much for climate change contrarians attempts to blame the sun for global warming. (scientificamerican.com)