Trump officials are minimizing warnings from scientists by arguing they are exaggerated and based on the worst-case scenario. They say the National Climate Assessment (NCA) – an expansive federal government report on the dangers of climate change in the US – considers only the highest possible levels of greenhouse gas emissions.“If you take the extreme case, you’re right, it’s dire,” Trump’s interior secretary, Ryan Zinke, said on Fox News. “If you take the best case, it’s not much.”
Of Zinke’s comments, Pennsylvania University climate scientist Michael Mann said “there is no truth to [them] whatsoever”. He added: “The report looked at an extremely wide range of scenarios.