Green Car Congress
MAY 15, 2017
A new international study has found that laboratory tests of nitrogen oxide emissions from diesel vehicles significantly underestimate the real-world emissions by as much as 50%. The research, led by the International Council on Clean Transportation and Environmental Health Analytics, LLC.,
Green Car Congress
OCTOBER 2, 2011
A NASA-led study has documented an unprecedented depletion of Earth’s protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in the stratosphere. The same ozone-loss processes occur each winter in the Arctic.
Green Car Congress
JANUARY 21, 2010
Springtime ozone distributions for 1984, 1995–2008 in the mid-troposphere (3.0–8.0 Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. The US EPA recently proposed new tougher ground-level ozone standards.
Green Car Congress
FEBRUARY 16, 2012
The founding coalition partners are Bangladesh, Canada, Ghana, Mexico, Sweden, and the United States, together with the UN Environment Programme (UNEP). The United States is already actively engaged in efforts to reduce these pollutants on the national and international levels. Earlier post.). The secretariat will be hosted by UNEP.
Green Car Congress
JANUARY 8, 2023
Emissions from automobile exhaust systems have decreased in recent years due to the introduction of cleaner fuels and new control technologies on internal combustion engines, as well as increases in numbers of hybrid and electric vehicles.
Green Car Congress
DECEMBER 6, 2015
annual average), according to a major international study published in the ACS journal Environmental Science & Technology. Additionally, the study found that the population-weighted mean concentrations of ozone increased globally by 8.9% An additional 217,000 deaths were attributable to long-term ozone exposure.
Green Car Congress
MARCH 2, 2012
Bromine also can remove ozone from the lowest layer of the atmosphere, the troposphere. Despite ozone’s beneficial role blocking harmful radiation in the stratosphere, ground-level ozone is a harmful pollutant. Bromine then reacts with a gaseous form of mercury, turning it into a pollutant that falls to Earth’s surface.
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