We’re rapidly approaching multiple Earth system tipping points, transforming our world with devastating consequences. Coral reefs may have already crossed a tipping point portending dieback with all dead by mid-century. If we don’t get back to 1.5 degrees by the end of this century, there may be a one in four chance of crossing at least one major global threshold–the collapse of AMOC, the Amazon rainforest ecosystem, or the Greenland or West Antarctic ice sheet. Check the link for more about tipping points.