Laura Toran

Federal Karst Map

Pennsylvania Boasts Large Number Of Sinkholes

Pennsylvania figures prominently among places that have sinkholes.


(A crew from Mississippi Power Co. prepares to replace a broken power pole and install a new transformer following Hurricane Sandy.  Credit: Mark Abrams)

Part 2: Playing Catch-Up After Each Big Storm

When a storm hits, governments and utility companies often find their preparations insufficient.