February 17th, 2011
Madrid and Barcelona Today Will Reach 50 to 60 ug/m3 Nitrogen Dioxide

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The cities of Madrid and Barcelona achieved 50 to 60 micrograms per cubic meter (ug/m3) of nitrogen dioxide (NO2), has informed Efeverde Professor of Biology and Geology and a Ph.D. environmental science from the Autonomous University of Madrid, Ramón Varela. Read More