The year 2040 is not doomsday. Nothing will happen and the world will go on as usual. It happens to be a date in the IPCC report that is cited at which the earth can be in trouble and possibly fall into an irreversible heat loop. But the work is loaded with qualifications and probabilities and levels of confidence in the statements made. It also assumes no carbon removal from the atmosphere.
Prognostication is peril laden for
in fact carbon removal and sequestration technologies are fast improving with pilot projects and others in several countries. These, plus changes in our habits, and a shift away from fossil fuels should keep our earth safe in the future ... at least until the next asteroid comes our way. Life as they say is precarious.