ISTANBUL Preliminary findings are beginning to emerge in a comprehensive study examining the pollution history of the Marmara Sea , one of Türkiye’s most fragile inland seas. Conducted under a Scientific and Technological Research Council of Türkiye (TÜBİTAK) program in partnership with Middle East Technical University ( ODTÜ ), Akdeniz University, Ege University and Recep Tayyip Erdoğan University, the study seeks to trace how pollutants have accumulated in the sea over decades. Using ODTÜ’s