Brown clouds threaten world food supply

Brown clouds threaten world food supply

In this Feb. 6, 2007, satellite image from NASA, a band of brown haze appears to narrow somewhat as it crosses over South Korea, center, then spreads out over the Sea of Japan toward Japan, center right. Opaque white clouds mix with the haze, especially over the Yellow Sea and Japan. Thick brown clouds of soot, particles and chemicals stretching from the Persian Gulf to Asia threaten health and food supplies in the world, the U.N. reports.


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