Nature's contribution
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چکیده
Around the world, ash and thick smoke from wildfires can choke the surrounding skies. While this visible, murky mess seems to disappear with distance from the fires, polluting gases and small particles not visible to the human eye drift upward and are carried away by global air currents. Can large wildfires contribute to smog problems in distant places? Gabriele Pfister, a researcher at the National Center for Atmospheric Research in Boulder, Colorado, is part of a team that confirmed wildfire-generated pollution can indeed be an intrepid--if unwelcome--global tourist.
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