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6PPD-quinone derived from tire debris is toxic to two trout species, not just coho salmon

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Now, researchers in Canada report that exposure to 6PPD-quinone at environmentally relevant levels can also be deadly for rainbow and brook trout, though not for Arctic char or white sturgeon. 6PPD is used industry-wide to help tires resist degradation and cracking. Markus Brinkmann, David Montgomery, Summer Selinger, Justin G.

Ozone 370
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HEI study in Europe finds evidence of health effects at lower levels of air pollution

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In the report, the investigators describe the development of new exposure models for all of Europe for four pollutants: fine particulate matter (PM 2.5 ), black carbon (BC), nitrogen dioxide (NO 2 ), and ozone (O 3 ), as well as PM 2.5 particle composition. Initial results were published in 2019 and Phase 2 results are under review.

Pollution 313
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US, China, and G-20 agree to work to global phase down of HFCs

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This was agreed by: Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey,the United Kingdom, the United States, and the European Union, as well as Ethiopia, Spain, Senegal, Brunei, Kazakhstan, and Singapore.

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United States and China agree to work together on phasing down HFCs

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HFCs are potent greenhouse gases used in refrigerators, air conditioners, and industrial applications. While they do not deplete the ozone layer, many are highly potent greenhouse gases. The Montreal Protocol was established in 1987 to facilitate a global approach to combat depletion of the stratospheric ozone layer.

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HEI launches two new non-tailpipe particulate emission studies

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This study will measure concentrations of non-tailpipe (NTP) particulate matter across Toronto, Canada to determine how much non-tailpipe pollution people might breathe in everyday life and how to better measure these exposures in the future. HEI receives balanced funding from government and industry.

Emissions 353
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Study: 87% of world’s population in 2013 lived in areas exceeding WHO PM2.5 guidelines

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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. and ozone (O 3 ). and ozone (O 3 ). Somewhat similar patterns were also evident for ozone.

2013 150
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Indo-US task force to study HFC phase-down

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Reifsnyder, in New Delhi, along with members of industry and civil society groups to discuss the HFC issue. HFCs are chemicals are potential substitutes for ozone-depleting and climate-warming CFCs and HCFCs currently being phased out under the Montreal Protocol treaty to protect the ozone layer.