Remember how, in the wake of Hurricane Katrina in 2005, Al Gore (and many others) claimed that we were in store for ever more devastating hurricanes? Since then, hurricane incidence has dropped off the charts; indeed, by one measure, global accumulated cyclone energy has decreased to its lowest levels since the late 1970’s. Exaggerated claims merely fuel public distrust and disengagement.
That is unfortunate, because global warming is a real problem, and we do need to address it. Warming will increase some extremes (it is likely that both droughts and fires will become worse toward the end of the century). But warming will also decrease other extremes, for example, leading to fewer deaths from cold and less water scarcity.