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Study finds global emissions of several banned ozone-destroying CFCs are increasing

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New analysis has found increasing emissions of several ozone-depleting chemicals despite their production being banned for most uses under the Montreal Protocol—and a loophole in the rules is likely responsible. According to the researchers, emissions from these CFCs currently do not significantly threaten ozone recovery.

Ozone 353
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HEI launches two new non-tailpipe particulate emission studies

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The Health Effects Institute (HEI) has launched two new studies funded under RFA 21-1, Quantifying Real-World Impacts of Non-Tailpipe Particulate Matter Emissions. What is the contribution of NTP emissions to ambient PM in large, high traffic cities? The project will be executed as four integrated sub-studies.

Emissions 353
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HEI study links fossil fuel combustion with more than 1 million deaths globally

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Fossil fuel combustion, a major source of air pollution, contributed to more than one million deaths globally in 2017, more than 27% of all deaths from outdoor fine particulate matter (PM 2.5 ), according to a new report published by the Health Effects Institute (HEI). According to HEI’s State of Global Air , PM 2.5

Global 472
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Study finds limiting warming to 2 °C would require at least a $200/t carbon tax globally

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All regions of the world do not—and will not—experience the effects of CO 2 emissions in the same way. These heterogeneous effects mean that different countries will have differing incentives to abide by the Paris Agreement, which aims to limit global warming below 2 °C relative to pre-Industrial levels.

Tax 397
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Study finds carbon emissions benefits of reduction in oil demand depend on size of drop and global oil market structure

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New research led by Mohammad Masnadi, assistant professor of chemical and petroleum engineering at the University of Pittsburgh Swanson School of Engineering, offers a closer look at the relationship between decreasing demand for oil and a resilient, varied oil market—and the carbon footprint associated with both.

Oil 305
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Global study shows uneven urbanization among large cities in the last two decades

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According to the latest report from the United Nations (UN), the global population in 2018 was 7.6 By 2050, the global population is expected to soar to 9.7 Credit: The University of Hong Kong. Of the 841 cities studied, 325 showed significant greening with more than 10% of greening BUAs.

Global 433
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Modeling study suggests 1.8M excess deaths attributable to urban air pollution in 2019

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A new modeling study led by researchers from George Washington Universit (GWU) finds that 86% of people living in cities worldwide (~2.5 million excess deaths in cities globally in 2019. In the first study, researchers looked at PM 2.5. disease burdens compare across urban areas globally, with most assessments analyzing PM 2.5

Pollution 468