'Chemical equator' discovery will aid pollution mapping

Scientists at the University of York have discovered a 'Chemical Equator' that divides the polluted air of the Northern Hemisphere from the largely uncontaminated atmosphere of the Southern Hemisphere.

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<p><a href="http://www.physorg.com/news141378912.html">'Chemical equator' discovery will aid pollution mapping</a></p> <p>Scientists at the University of York have discovered a 'Chemical Equator' that divides the polluted air of the Northern Hemisphere from the largely uncontaminated atmosphere of the Southern Hemisphere.</p>