A river is never just the volume of water flowing through it. Along its entire basin, it retains the memory of every factory, every mine, every conflict, and every failure of oversight, burying these fragments deep within its riverbed sediments. What environmental scientists call a "Compound Contamination Event"—recently observed at various points along the Euphrates River—is the chilling reality of this ecological memory being abruptly reawakened. When we place the Syrian se