Concentrations of volatile organic compounds—precursors to ground-level ozone formation—are on the rise in areas over and downwind of a major shale oil and gas field in Texas.
air pollution
Posted inFeatures
Urbanization and Air Pollution: Then and Now
Analysis of decades of mitigation efforts in Los Angeles demonstrates that air quality in megacities can be greatly improved.
Posted inNews
High Smog Levels Seen in Mecca During the Annual Pilgrimage
Surveys of air quality show that smog and other pollutants in Islam’s holiest city during the Hajj are among the worst in the world, prompting the Saudi government to look for ways to clear the air.
Posted inFeatures
Crop Residue Burning: A Threat to South Asian Air Quality
Smoke from the residues, burned during October and November to ready fields for next year’s planting, emanate from Punjab, a region spanning northwestern India and eastern Pakistan.