In August 2005, Hurricane Katrina devastated New Orleans. In the years since, as residents have come and gone and rebuilt their lives, a lot has changed about the city--including, says Katie Carmichael, the way people talk. And: The author of Sudden Spring, Rick Van Noy travelled across the US South interviewing people about floods, heat, and storms. He says that, in many Southern communities, climate change is already here.

Later in the show: In the early 19th century, Americans began to journey away from home--not for work or migration, but simply for the sake of traveling. It gave rise to a new cultural phenomenon: the tourist. Will Mackintosh’s is the author of a new book Selling the Sights: The Invention of the Tourist in American Culture. And: In the past couple of decades, a lot has changed for rural American tourism. Nancy McGehee says that from public artworks to popular foodie trails, small towns and rural areas are finding ways to enrich their communities through tourism. Plus: City-dwellers escape to national and state parks for the beautiful sights and the fresh air. Chris Zajchowski says that, unfortunately, when those tourists travel for clean air, they bring polluted air with them.