California wrestles with pollution from Asia

  • 5 years ago
When conditions are correct, Asian-born pollutants can be projected into the lower-free troposphere and catch a ride on the jet stream, sometimes arriving in California in as little as 4 days. The FT's Christopher Booker reports from San Francisco on how the state is working to understand just how large the foreign contribution might be.

For more video content from the Financial Times, visit http://www.FT.com/video