Rett Girls Guest: Monica Coenraads, Executive Director, Rett Syndrome Research Trust, and mother of Chelsea, a girl with Rett Syndrome Rett Syndrome is a rare genetic disorder that affects 1 in 10,000 girls. It's marked by a loss of function in seemingly normal babies. People with the syndrome have symptoms of autism, epilepsy, cerebral palsy, Parkinson's and anxiety. Hope for a Cure for Rett Syndrome Guest: Tim Riley, Chief Scientific Officer, Rett Syndrome Research Trust A cure for Rett Syndrome may be on the horizon, and scientists have several possible methods for treating the disease. In fact, the cure for this disease could help treat other brain disorders.  Using Eye-Tracking Technology to Communicate with People Who Have Rett Syndrome Guest: Julie Peterson, mother of Emily, a girl with Rett Syndrome. Emily Peterson uses eye-tracking technology to communicate with her family. Exploring the World’s Deepest Underwater Caves  Guest: Jill Heinerth, Explorer-in-Residence, The Royal Canadian Geographical Society, and author, "Into the Planet: My Life as a Cave Diver" We know more about outer space than we do about the ocean. The world’s deepest underwater caves have long been a source of mystery and danger. Jill Heinerth, a renowned Canadian cave diver, explores the wonders of these secret places. Black Confederates Guest: Kevin M. Levin, historian and author, "Searching For Black Confederates: The Civil War’s Most Persistent Myth" There’s been loud public debate about the removal of Confederate monuments throughout the South. Less well known is a conversation about the role of black Confederate soldiers in the war—in fact the debate has centered on whether there actually WERE any black Confederate soldiers. We don’t generally dig into politics here on Constant Wonder, but we do wonder a lot about history. So, were there blacks soldiers fighting for the Confederate cause? If so, who were they? Enslaved or free men? Why is it important to get this history right?