Taiwanese coast guard commander Lin Chie-ming is on the frontline of a new type of warfare that China is waging against Taiwan. China’s weapon? Sand. On a chilly morning in late January, Lin, clad in ...

Above the shimmering waters of Salt River Project’s Granite Reef Diversion Dam, a scenic view of Red Mountain is on full display, but below the surface, a dirty problem grows. As the key piece of ...