Greta Thunberg is the only climate change non-denialist out there in the mainstream, and even she’s probably not radical enough.

Because people haven’t evolved to think about problems like this, they have no fucking idea what’s coming or how intractable it’s going to be given our past choices. Part of it is that no one, really, has any handle on proper systems thinking and thus they are using Crayolas on the Sistine Chapel. And another part is that people just don’t want to know.