Word: heintzenberg
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Another study by Chinese and German researchers found that the 2006 test also helped cut airborne particles. "There was a significant decrease," says Jost Heintzenberg, director of the Leibniz Institute for Tropospheric Research. Under this year's plan, with added restrictions to keep trucks and cars that don't meet inspection out of the city, Heintzenberg says, "I make an educated guess on a 50% visibility improvement that they can manage...
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