AGILE has discovered a pattern of gamma-ray emission from the Supernova Remnant W44 that can be unambiguosly attributed to accelerate protons smashing against surrounding gas. For many decades, a direct identification of sites in our galaxy where proton acceleration takes place has been elusive. The AGILE data resolves the problem of clearly identifying a source of energetic cosmic rays in our galaxy. The AGILE team reported these findings in the paper by Giuliani et al., ApJL, 742, L30, 2011.