Cold‑War Wrecks Leach Radioactivity Long‑Term

Deep‑sea wrecks from the Cold War — especially nuclear‑armed or nuclear‑powered vessels — can corrode decades later and intermittently release fission isotopes into surrounding water and biota even when heavy components (warheads/plutonium) remain physically contained. Monitoring data show extremely high localized cesium and strontium concentrations that fall off steeply with distance, implying dilution but continued seepage as reactor fuel corrodes. — This reframes Cold‑War shipwrecks from historical curiosities to ongoing environmental, public‑health, and sovereignty issues that require international monitoring, liability rules, and funding.