Environmental issues in Kazakhstan at the Semipalatinsk nuclear testing facility (in fact a large zone south of Kourchatov (Курчатов)) and along the Chinese border. The Central Asian Regional Environmental Center is located in Kazakhstan, which fosters regional cooperation on environmental issues. Most of Kazakhstan’s water supply has been polluted by industrial and agricultural runoff and, in some places, radioactivity. The Aral Sea, which is shared with Uzbekistan, has shrunk to three separate bodies of water because of water drawdowns in its tributary rivers. A Soviet-era biological weapons site is a threat because it is located on a former island in the Aral Sea that
Science and technology in Uzbekistan field of science and gender, 2013 or closest year Source: "UNESCO Science Report: towards 2030" (2015), Table 14.1 Since 2012, Uzbekistan has ceded its lead to Kazakhstan for the number of published scientific articles, according to Thomson Reuters’ Web of Science, Science Citation Index Expanded. Even taking population into account, Kazakhstan’s output is now much higher than that of its neighbour, with 36 articles per million inhabitants, compared to 11 for Uzbekistan. The majority of scientific papers focus on physics (35%) and chemistry (21%), a pattern also found in Kazakhstan. Since 2006, the rate of international collaboration has remained steady,