15 diciembre 2014
Dangerously high levels of air pollutants are being released in Mecca during the hajj, the annual holy pilgrimage in which millions of Muslims on foot and in vehicles converge on the Saudi Arabian city, according to new findings.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/ya3VEcDu_4I/141215123049.htm
