 Hi, I'm Ray Suarez. On this week's episode of On Shifting Ground, Congo and why China, Russia, and the U.S. are vying for its resources. This afternoon at 2. Funding for Here and Now comes from the listeners of WBUR Boston and your NPR station. From MathWorks, creators of MATLAB and Simulink software for technical computing and model-based design. MathWorks, accelerating the pace of discovery in engineering and science. Learn more at MathWorks.com.