Order of the National Green Tribunal in the matter of News Item titled “CSE report finds dangerous increase in ozone pollution across urban India” appearing in Down to Earth dated 06.08.2024. The Principal Bench of the NGT heard the matter on March 21, 2025. In the original application, registered suo …
New York and 13 other states are suing US Environmental Protection Agency claiming it violated the Clean Air Act in revising ozone pollution standards in March, the New York attorney general said on Wednesday. "The EPA is charged with protecting the environment, yet the Bush administration has repeatedly used it …
European Union lawmakers backed a watered-down law on "green crime" on Monday that would make dumping toxic waste or illegally transporting hazardous materials a criminal offence throughout the bloc. The draft law obliges the EU's 27 member states to treat and punish as criminal acts a list of nine offences …
International laws: Even as 1987 Montreal Protocol laid down rules to banish ozone depleting substances (ODS), several of the substitutes that came into use were GHGs. These were covered under the Climate Change Convention. The Kyoto Protocol included six GHGs and committed developed countries to mandatory emission reduction targets of …
Levels of ozone reached their highest point of the year so far as the UK bathed in warm sunny weather last weekend. Pollution levels were high across the UK on Saturday (Copyright AEA and Defra) Members of the public were urged to cut back on unnecessary car journeys to reduce …
Nitryl chloride, an active halogen, can be produced through the night-time reaction of dinitrogen pentoxide with chloride-containing aerosol in the polluted marine boundary, and has been measured at levels that are sufficient to affect the photochemistry of oxidants off the southwestern US coast and near Houston, Texas.
Tropospheric ozone contributes significantly to human-induced greenhouse warming. Calculations from satellite measurements of spectral radiance suggest that ozone in the upper troposphere caused an average reduction in clear-sky outgoing long-wave radiation over the oceans of 0.480.14 W m- 2 for the year 2006 between 45
In densely populated coastal areas, reactions of polluted air with sea salt aerosol from the ocean can lead to high surface ozone levels that affect air quality.
The rule of unintended consequences threatens to strike again. Some researchers have suggested that injecting sulfur compounds into the atmosphere might help ease global warming by increasing clouds and haze that would reflect sunlight. After all, they reason, when volcanoes spew lots of sulfur, months or more of cooling often …
Short-term exposure to smog, or ozone, is clearly linked to premature deaths that should be taken into account when measuring the health benefits of reducing air pollution, a National Academy of Sciences review concludes. Mother's diet during pregnancy influences baby's sex: studyChemical key that could stop cancer in tracks
Even breathing in a little ozone at levels found in many areas is likely to kill some people prematurely, the National Research Council reported on Tuesday. The report recommends that the Environmental Protection Agency consider ozone-related mortality in any future ozone standards, and said local health authorities should keep this …
The us government has tightened federal air quality standards for smog-forming ozone, but not to the extent recommended by the us Environmental Protection Agency's scientific advisers. The rules, which cover average concentrations of ground-level ozone, have lowered the current standard of 80-84 parts per billion (ppb) to 75 ppb. Air …
If you do like to be beside the seaside, it might be best to avoid beaches near major ports. The mix of sea salt, ship fumes and city smoke leads to a chemical reaction that encourages the formation of ozone smog, adding to the pollution that forms in cities. James …
Last month, The Washington Post reported that President George W. Bush had personally intervened to weaken new regulations to control smog just as they were about to be announced by the Environmental Protection Agency (EPA). In response, advocates of tighter standards predictably charged that the president had overturned a scientific …
The introduction of chlorine at the end of the treatment line for residual protection purposes, widespread use of ozone at various stages of treatment and the development of new ozone generators are the latest technical trends that have led to numerous changes in the water disinfection processes.
Destruction of the Earth's ozone shield due to the release of hydrogen sulphide and methane has been suggested as a cause of mass extinctions during periods of ocean anoxia over the past two billion years. This mechanism does not explain the end-Permian mass extinction, according to simulations with a two-dimensional …
For many researchers, the Bush administration will be best remembered for the way it has manipulated scientific advice for political ends. The latest evidence of this tactic is a controversial proposal to change the way US air-quality standards are set, according to the Union of Concerned Scientists (UCS) in Washington …
Hydroxyl radicals are often called the "detergent" of the atmosphere because they control the atmosphere's capacity to cleanse itself of pollutants. In this article the researchers show that the reaction of electronically excited nitrogen dioxide with water can be an important source of tropospheric hydroxyl radicals.
More than a hundred people live in cities that fail to meet international standards for air quality. Efforts to improve conditions in these urban areas have usually focussed on reducing emissions of reactive hydrocarbons, nitrogen oxide free radicals and primary and secondary sources of particulate matter.
In December 2005, Stephen Johnson dunked himself in hot water. Johnson, the administrator of the U.S. Environmental Protection Agency (EPA), decided to discard advice from a scientific advisory committee when he set a major air-quality standard for soot. Scientists and environmental groups were outraged. This time Johnson did it again …
