A thick shroud of dust appears over China on April 6 and 7, 2001. The densest portion of the aerosol pollution travels east over China, Russia, Japan, the Pacific Ocean, Canada, and the United States. Note: This animation shows dust in China being blown across the Pacific Ocean and into the United States. Animator: Lori Perkins (NASA/GSFC), Greg Shirah (NASA/GSFC). Scientist: Pawan K. Bhartia (NASA/GSFC), Paul Newman (NASA/GSFC). Platforms/Sensors/Data Sets: Earth Probe/TOMS.