“I’ve been [in] helicopters in the West, in the Southwest and Northwest, flown over more land burned to the ground, all the vegetation gone, than the entire state of Maryland,” Biden told his audience, partly referring to the wildfires now raging in Texas. “The idea there’s no such thing as climate change, I love that, man," the president added with evident sarcasm. "I love some of my Neanderthal friends who still think there’s no climate change.”
The root cause is well known - greenhouse gases, largely from extracting and burning fossil fuels:
I’m usually empathetic about name-calling. And yes, Neanderthals may indeed have been superior to we ‘moderns’ (hardy-har, look at the record) in multiple ways.
He could have chosen some other perjorative, but most can apply to the living. The least damage for the best purpose; I can live with this one. While we keep making ‘Climate-deniers’ the worst pejorative.