The news is mainly about ______. [originaltext] Chinese state media say that

Chinese state media say that a government study of the health of the Yangtze River shows that billions of tons of waste have irreversibly polluted its waters. The report offers a grim outlook for the river that provides about 35% of China’s total fresh water resources. It says more than 600 kilometers of the river are in critical condition and almost 30% of its major tributaries are seriously polluted.