China's pollution levels severe
Six of the 10 most polluted cities in the world are in China, one MSU researcher said. This is a problem for Jack Liu, who was born there and now studies the impact of economic growth on the environment. "Now, more and more people are realizing the importance of the environment to humans," said Liu, the director for MSU's Center for Systems Integration and Sustainability. Liu said economic development is important, but comes at the expense of the environment.