07/25/13 - Thursday's Topical Currents begins with marine biologist Dr. Gary Schmelz, a leading environmental educator. He’s written Journey To The Edge of Eden, which chronicles his experience in Florida’s wild areas, dating to 1970. And more: Linda Gassenheimer’s Food & Dining. It’s late July, so what better topic than cold, creamy delectable ice cream? Especially sweet and savory Mexican versions. That’s Topical Currents Thursday at 1:00pm on WLRN-HD1 rebroadcast at 7:00pm on WLRN-HD2 and audio on-demand after the live program.