Air quality in China's capital this weekend was at levels judged hazardous to health. Authorities fear environmental concerns could spark social instability.
Industry has fought tighter restrictions on soot from power plants for years. Today is the court-ordered deadline for the Environmental Protection Agency to deliver the new rules.
Chinese pollution particulates are shown to change weather patterns in the U.S., which will mean better skiing, more water for Californians, and even a better life for fish here at home