Union of Concerned Scientists
JULY 9, 2024
Hydrofluorocarbons (HFCs) were developed to replace a type of chemical that impacted the ozone layer in our upper atmosphere, but these replacements are potent greenhouse gases. There are a variety of rules under review that would require tighter controls and also help companies to find safer alternatives.
Union of Concerned Scientists
SEPTEMBER 30, 2024
Site assessments for the Comprehensive Environmental Response, Compensation, and Liability Act , or ‘Superfund’, include consideration of multiple exposure pathways and pollutants. So, incrementally, environmental protection is becoming more like real life, where exposures are not singular and isolated.
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Environmental Science
JULY 30, 2018
There are only 6 NAAQS - ozone, carbon monoxide, particulates, lead, sulfur dioxides, and nitrogen dioxides - but they dominate most air quality concerns ranging from smog to health effects, such as from particulates and lead. There remain some problem areas; for example Boston tends to be a non-attainment area for ozone in the summer.
Environmental Science
SEPTEMBER 7, 2018
Chlorofluorocarbons (CFCs) : A group of inert chemical used in many industrial and everyday processes such as our refrigerators that are not broken down at lower atmospheric levels and rise to the upper levels, destroying ozone. They are water vapor, carbon dioxide, methane, nitrous oxide, ozone, CFCs, and hydrofluorocarbons.
ESA
APRIL 5, 2021
The SAB Staff Office is especially interested in scientists with the expertise described above who have knowledge and experience relating to criteria pollutants (carbon monoxide, lead, nitrogen oxides, ozone, particulate matter and sulfur oxides). Nominations are due May 3, 2021. Comments are due Apr.
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