The only land route that connects Isle de Jean Charles, Louisiana, to the rest of the continental United States is Island Road, a thin, four-mile stretch of pavement that lies inches above sea level and immediately drops off into open water on either side. Even on a calm day, salt water laps over the road’s tenuous boundaries and splashes the concrete.

In many ways, Essen is the envy of cities trying to move past their industrial days. Once the steel and coal center of Germany, Essen’s economic success in the early 20th century was evident in the dust blanketing the city and sulfur filling the air with the constant stench of rotten eggs. By one resident’s account, coal miners permanently wore black smudges across their faces, earning them the nickname waschbar, or “raccoons.”

"Alerta sísmica! Alerta sísmica!" Few things strike as much fear into the hearts of Mexico City residents as the words “seismic alert” blaring from speakers in schools and parks. It means an earthquake is rumbling up from the Pacific coast, and you have 60 to 90 seconds to get someplace safe.