Geography of Kazakhstan the water in Kazakhstan is polluted by industrial effluents, pesticide and fertilizer residue, and, in some places, radioactive elements. The most visible damage has been to the Aral Sea, which as recently as the 1970s was larger than any of the Great Lakes of North America save Lake Superior. The sea began to shrink rapidly when sharply increased irrigation and other demands on the only significant tributaries, the Syr Darya and the Amu Darya (the latter reaching the Aral from neighboring Uzbekistan), all but eliminated inflow. During the Soviet Era, Kazakhstan received water from Tajikistan and Kyrgyzstan, and Uzbekistan, Turkmenistan,
Uzbekistan the Shanghai Cooperation Organisation (SCO) and hosts the SCO's Regional Anti-Terrorist Structure (RATS) in Tashkent. Uzbekistan joined the new Central Asian Cooperation Organisation (CACO) in 2002. The CACO consists of Uzbekistan, Tajikistan, Kazakhstan and Kyrgyzstan. It is a founding member of, and remains involved in, the Central Asian Union, formed with Kazakhstan and Kyrgyzstan, and joined in March 1998 by Tajikistan. In September 2006, UNESCO presented Islam Karimov an award for Uzbekistan's preservation of its rich culture and traditions. Despite criticism, this seems to be a sign of improving relationships between Uzbekistan and the West. The month of October 2006