Drop by drop

A Swiss water expert's long collaboration with his Chinese counterparts yields results. Liu Xiangrui reports.

Andreas Goetz, a Swiss expert on water management, considers his work in China for more than a decade a great success.

"We first made a rope of cooperation. Now, it has developed into a net," the-68-year-old says of the roles Chen Lei, China's water resources minister, and he have played on various projects.