Related by context. Frequent words. (Click for all words.) 54 Amur River 53 Syr Darya 52 Balkhash 52 taiga 51 radioactively contaminated 51 Volcano erupts 51 Kolyma 51 Volga river 50 Ukhta 50 Songhua river 50 Zheleznogorsk 50 Volgodonsk 50 Novgorod region 50 exclave 50 Vorkuta 49 Crimean Peninsula 49 Tobolsk 49 Yenisei River 49 Udmurtia 48 Gerdec 48 Lop Nur 48 Kola Peninsula 48 western Siberia 48 uranium tailings 48 Tver region 48 Krasnodar Territory 48 Lava flows 48 Komi Republic 48 phosphate mines 47 Khakassia 47 Ural mountains 47 Dnieper 47 Nenets 47 Volga River 47 Pamir Mountains 47 Siberia 47 Radioactive waste 47 Septic tanks 47 lewisite 47 toxic benzene 47 Lenin statue 47 Amur Region 47 Nevelsk 47 Carpathian mountains 47 Boat sinks 47 Sayano Shushenskaya plant 46 banya 46 Aral Sea 46 Saratov region 46 RBC #.#.# 46 Radiation leaks 46 Tsitelubani 46 salinization 46 Siberian tundra 46 polluted groundwater 46 Buryatia 46 Irkutsk Region 46 polluted 46 Nazran Ingushetia 46 Neva River 46 Dzerzhinsk 46 Nizhny Tagil 46 radioactive byproducts 45 mineshafts 45 Sosnovy Bor 45 Toxic fumes 45 Quake jolts 45 Kislovodsk 45 Angarsk 45 Primorsky 45 Pikalyovo 45 Caucasus Mountains 45 decaying corpses 45 peat bogs 45 Danube delta 45 Urus Martan 45 heavily polluted 44 Ural Mountains 44 Highly radioactive 44 mud volcanoes 44 Kamchatka 44 Lake Baikal 44 fumaroles 44 Raw sewage 44 Tianshui 44 radioactive substances 44 Semipalatinsk 44 Karlovo 44 Severnaya 44 Nikopol 44 Seversk 44 Toxic chemicals 44 Nizhniy Novgorod 44 Blagoveshchensk 43 toxic wastes 43 Zapadnaya mine 43 garbage heaps 43 settling ponds 43 Kaliningrad Region 43 polluting groundwater 43 Strong quake jolts