The Haihe, the largest water system in north china, is formed by five large rivers—the North Canal, the Yongding, the Daqing, the Ziya and the South Canal—and more than 300 tributaries these ...

To find out how destructive negligence and indifference are, it is enough to move between Hawaii and California and see the Great Pacific Garbage Patch! From wreckages of containers to children's toys ...