Now that it’s warming up, you may consider visiting one of Georgia’s many historic monuments. The Ocmulgee National Monument near Macon was designated as a National Treasure by the National Trust for Historic Preservation. The most prominent features at Ocmulgee are huge earthen mounds that spread across 700 acres. Native Americans first settled there thousands of years ago. We talked with a professor at Middle Georgia State University, Matt Jennings, to learn more about the history.

On Second Thought for Tuesday, March 20, 2018.

March is Women’s History Month. We pay homage all this month to female trailblazers. Atlanta-based activist Cecily McMillan has experienced things most people never will. In 2012, she was arrested for assaulting a police officer during an Occupy Wall Street protest. She was sentenced to serve three months on Rikers Island in New York, one of the largest correctional facilities in the world. It has also faced a number of accusations of abuse and prisoner neglect. GPB Special Correspondent Celeste Headlee sat down with Cecily to talk about her time in prison

On Monday, we talked about new organic meat regulations that are coming this Spring. The U.S. Department of Agriculture will be less strict on how animals are raised, fed and transported, when sold as organic. Journalist Maryn McKenna has written about the complex and fascinating history of America’s most popular meat bird, with special attention to the role antibiotics have played in the bird’s transformation.

We end the show with some non-traditional rock music, courtesy of the Philadelphia art-rock group, Palm. NPR says its sound “turns rock tropes inside-out.” The band is in Atlanta on Tuesday night at The Mammal Gallery. On Second Thought’s Reid Williams caught up with band member Eve Alpert, who says it’s ok for her group not to have a clear label.