Second in a series on changing cities

Walking along the long narrow stretch of Ochheuteal Beach on the Cambodian coast of Sihanoukville is like walking between two worlds. On one side, a small boy runs gleefully into the waves as the golden sun dips down to the ocean, the sky awash in purples and pinks. On the other, trash piles up on construction sites as the skeletons of buildings and tower cranes stretch to the sky.

First in a series on changing cities

When Pat Kelley was growing up in the 1960s, Chattanooga was still a bustling industrial town. Textile factories, chemical plants, and steam boiler manufacturers employed men and women by the thousands. As a boy, Kelley caught glimpses of fire flashing in the foundries and watched as steel mills hurled atomized carbon into the humid Southern air.