Do William Nordhaus’s predictions of what global heating will cost the earth differ from science?

William Nordhaus was awarded the 2018 Nobel Prize in economics for “integrating climate change into long-run macroeconomic analysis.” This implies that he worked out what global heating means for our economy, given what climate scientists say will happen to our planet. But, according to U.K. economist Steve Keen, Nordhaus’s predictions of what global heating will cost the earth are dangerously at odds with the science