China's environmental woes are so large that they've begun to generate social instability.

Choking on vile air, sickened by toxic water, citizens in some corners of this vast nation are rising up to protest the high environmental cost of China's economic boom.

In one recent incident, villagers in this hilly coastal region grew so exasperated by contamination from nearby chemical plants that they overturned and smashed dozens of vehicles and beat up police officers who arrived to quell what was essentially an environmental riot.

"We had to do it. We can't grow our vegetables here anymore," said Li Sanye, a 60-year-old farmer. "Young women are giving birth to stillborn babies."

Across China, entire rivers run foul or have dried up altogether. Nearly a third of cities don't treat their sewage, flushing it into waterways. Some 300 million of China's 1.3 billion people drink water that is too contaminated to be consumed safely. In rural China, sooty air depresses crop yields, and desert quickly encroaches on grasslands to the west. Filth and grime cover all but a few corners of the country.

ENN