From severe droughts in Georgia to contaminated water in Flint, Michigan, we've seen the fragility of the nation's water supply tested. A power outage knocked two Atlanta pumping stations offline last weekend, turning what comes from the tap into a safety hazard. We  speak with Atlanta Department of Watershed Management Commissioner Jo Ann Macrina about efforts to expand the city's emergency water supply.

Then, students across the Southeast took part in an underwater robotics competition last weekend. Gray's Reef National Marine Sanctuary hosted the event and created a variety of challenges for the robots to complete. Each team had to build and program a remotely operated vehicle to take on the tasks.  GPB Savannah’s Gabrielle Ware was at the competition and brings us this audio postcard. 

We also talk about Georgia's Fuller E. Callaway. Born in the small town of LaGrange in west Georgia, he rose to become one of the richest entrepreneurs of his time. We speak with historians Buck and Carol Melton about their new book "Fuller E. Callaway: Portrait of a New South Citizen" about the life and legacy of Callaway here in Georgia. 

And we talk about animal intelligence with Emory University professor and primatologist Frans de Waal. His new book is "Are We Smart Enough to Know How Smart Animals Are?" which explores why animals are smarter than humans give them credit for. 

Tags: OST Full Show  May  water  Atlanta  Georgia