But the European Union's emissions rose 1.4% in 2015, against a backdrop of long term declines in pollution, while another major emitter, India, saw emissions rise 5.2%.
Zhang Jinlong, a BNMG official, acknowledges many problems but says that the company has spent heavily on technology that has already produced gains in efficiency and declines in pollution at the city's remaining factories.
He hasn't a clue about Republicans' historic contributions to science-driven environmental policy: the incontestable environmental improvements in the restored lakes and rivers, the acid rain controls, the reduction of key air pollutants by 70, 80 and 90%, and the sharp decline in pollution from automobiles even as their numbers more than doubled".
Further declines in air pollution are within reach, said Dr. Laden, an assistant professor of environmental epidemiology at Harvard.
During 1985–1995 a steep decline in air pollution, especially in PM pollution, took place in Germany.
Nor was a loss of public interest the only negative consequence of the decline in visible pollution.
Some parks, like Acadia National Park in Maine, have been able to use mass transit to reduce the number of cars greatly and, as a result, have seen a sharp decline in air pollution.
The onset of metal pollution is dated to the latter part of the 19th century, peak metal concentrations date from the early 1950s, and the observed decline in metal pollution starts in the early 1980s.
In this issue of EHP, investigators report findings on birth weight arising from a unique research opportunity: the temporary decline in air pollution during the 47 days comprising the 2008 Beijing Summer Olympic Games and Paralympic Games.
An April 2011 EPA study, meanwhile, found that in 2010 alone, the decline in fine particle pollution and ozone pollution attributed to the Clean Air Act Amendments of 1990 prevented more than 160,000 premature deaths, 130,000 heart attacks, millions of cases of respiratory ailments, and 86,000 hospital admissions.
