China estimates of the day

Pollution is more globalized too:

Bruce Hope, a senior environmental toxicologist at the Oregon Department of Environmental Quality, estimates that global sources contribute 18 percent—more than four times the local share—to Oregon’s air pollution.  Increasingly, the ozone on the west coast will be determined by China.  In California, for example, some researchers believe at least one-third of California’s fine particulate pollution—known as aerosol—originates from Asia.  These pollutants could potentially nullify California’s progress on meeting stricter Clean Air Act requirements.  In May 2006, University of California-Davis researchers claimed that almost all the particulate matter over Lake Tahoe was from China.  The great irony is that these pollutants are mainly due to the burgeoning demand of U.S. and EU consumers for cheap Chinese goods—which is driving the Chinese economic development.  Some estimates cite that 7 percent of China’s CO₂emissions are due to production of U.S. imports.

Here is the source, the pointer is from Robin Hanson.  Concerning the last sentence, if you haven't already seen it by now, here is Hal Varian's piece on where the iPod is made.