The floods, droughts, wildfires and extreme heat sweeping the globe are offering a dose of the climate future that scientists have warned about for decades — and all the ways the world is not ready.

From a nearly depleted federal disaster fund to state insurance markets that are faltering under the weight of multiple catastrophes, extreme weather is testing the ability of even a rich nation like the United States to withstand the warming that has arrived faster than many scientists expected. So are the torrential rains flooding Northeastern states like Vermont, the shriveling Colorado River that has prompted a multistate brawl over dividing the water, the record temperatures that have raised worries about the stability of the electric grid, and the Canadian wildfire smoke that has repeatedly blanketed D.C. and other parts of […]