Science Scratching the Surface: Cthulhu Macula KUAF | By Caitlin Ahrens Published July 2, 2019 at 11:48 AM CDT Facebook Twitter LinkedIn Email Listen • 2:28 1 of 2 2 of 2 For the 100th episode of Scratching the Surface, Caitlin Ahrens talks about everyone's favorite dwarf planet, Pluto and it's unique geography. Caitlin Ahrens - The Pluto Manager