You're doing your Christmas shopping. Traffic is heavy. On the main streets, two or more lanes are completely filled with cars. Slow forward movement in your lane ensures a stop at every traffic light.
Most North Georgia homeowners have had this unpleasant experience. You step into the garage or some other room with outside walls after a cold night, and are greeted by a waterfall coming out of the drywall. After turning off the water supply at the meter and using every available towel to mop up the lake that has formed, there are two immediate goals: Fix the damage, and do something that will prevent this from happening again.
We know the zones where the Earth's crust is thin and allows for devastating volcanic eruptions. But there seems to be no solution to the peril affecting many millions of people who live in the shadow of active volcanoes.