This combination of 2 pictures shows the Eiffel tower in central Paris through a haze of pollution (R) taken on March 14, 2014 and during clear weather (L) on August 17, 2012. More than 30 departments in France are hit by maximum level pollution alerts since the day before, prompting Ecology Minister to say air quality was “an emergency and a priority for the government.” AFP PHOTO / BERTRAND GUAY / KENZO TRIBOUILLARD