Five employees with PMEL's Ocean Chemistry Division were honored on November 8th, 2006 for winning Department of Commerce Gold Medals at the 58th Honor Awards Ceremony in Washington, D.C. The Gold Medal recipients included members of PMEL's ocean carbon group (Richard Feely, Christopher Sabine, Marilyn Roberts, Dana Greeley, and Catherine Cosca), along with the ocean carbon group of NOAA's Atlantic Oceanographic and Meteorological Laboratory (AOML), (Rik Wanninkhof, Tsung- Hung Peng, Robert Castle, Betty Huss, and Esa Peltola). These two groups were recognized for their 15 years of joint research and observations that have shown the increasing acidity of the ocean as a result of the uptake and storage of anthropogenic carbon dioxide.