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UCL-led study finds climate impact caused by growing space industry needs urgent mitigation

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The rapidly growing space industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study led by UCL and published in the journal Earth’s Future as an open-access paper. Locations and fuel types of rocket launches in 2019.

Climate 428
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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. For comparison, columns over the same time periods are shown for 2019. —Guy Brasseur.

Ozone 291
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WHO issues new, lower Global Air Quality Guidelines for classical pollutants

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New WHO has issued new Global Air Quality Guidelines (AQGs) that reduce levels of key air pollutants, some of which also contribute to climate change. Since WHO’s last 2005 global update, there has been a marked increase of evidence that shows how air pollution affects different aspects of health. nitrogen dioxide (NO?)

Pollution 435
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New study puts air-pollution related deaths in India in 2019 at 1.67 million

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million deaths in 2019—the largest pollution-related death toll in any country in the world—and also accounted for $36.8 million deaths in 2019—the largest pollution-related death toll in any country in the world—and also accounted for $36.8 and that due to ambient ozone pollution increased by 139.2%.

Pollution 321
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Northwestern/Princeton study explores air quality impacts of aggressive conversion to EVs

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The exponentially increasing global market share of EVs has prompted research on their efficacy in reducing greenhouse gases, but comparatively little effort has focused on their impact on air quality. Among the findings: Summer surface ozone (O 3 ) decreases in most locations due to widespread reductions of traffic NO x emissions.

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Test of Planet-Cooling Scheme Could Start in 2022

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Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Even less is understood about the potential risks to people and the environment—could the particles deplete the ozone layer, for example, or significantly alter the weather? cancel the launch.

Ozone 121
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German-Chilean consortium investigating new ways of reducing arsenic in copper concentrates: ReAK

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Chile is the world’s top copper producer (27% of global production) and exporter. Although copper is now readily recyclable, global demand is on the rise, thus calling for the continued mining of copper. The project officially began in September 2019 with funding from the German Federal Ministry of Education and Research.

Chile 243