Science Scratching the surface: The Chicxulub Crater KUAF | By Caitlin Ahrens Published June 28, 2019 at 11:57 AM CDT Facebook Twitter LinkedIn Email Listen • 2:22 1 of 2 2 of 2 On this episode of Scratching the Surface, Caitlin talks about the Chicxulub Crater, an ancient double layer crater on Earth. Caitlin Ahrens - The Pluto Manager