Open access notables Back in April of 2020 Chi Xu et al. captivated some public attention with their paper Future of the human climate niche, which explained a reasonable case for its startling conclusion about routine habitability of large parts of our planet now supporting dense populations. Now come the same researchers along with added talent to refine and extend those results, and the news isn't getting better. Quantifying the human cost of global warming paints a grim picture. Here are our stakes in play, as reflected in the abstract: