Scientific American: Nitrogen-containing pollutants from agriculture, transport and industry in China has increased by more than half in 30 years, a study shows, adding to concerns about the countrys deteriorating environment.
Rapid economic growth in China has driven high levels of nitrogen emissions in the past few decades, says Zhang Fusuo, an agriculture researcher at the China Agricultural University in Beijing and a co-author of the study.
Once emitted into the air, key nitrogen pollutants ammonia and...