Professor Ben McCall (University of Illinois at Urbana-Champaign) visited CIERA on Tuesday, February 10th. We were thankful that he was able to give the 2015 CIERA Winter Interdisciplinary Colloquium: Ben is an expert in connecting chemistry and astronomy. His talk was entitled: “Astrochemistry: From H_3^+ to C_60”; the talk focused on how laboratory studies of complex molecules help astronomers investigate such diverse regions as diffuse interstellar clouds, dense molecular clouds, and outflows from stars.