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Harvard/Nanjing study: China’s war on PM2.5 pollution is causing more severe ozone pollution

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Cities restricted the number of cars on the road, coal-fired power plants reduced emissions or were shuttered and replaced with natural gas. pollution is falling, harmful ground-level ozone pollution is on the rise, especially in large cities. There was so much particulate matter in Chinese cities that it stunted the ozone production.

Ozone 262
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Reducing Black Carbon Emissions and Ground-Level Ozone Would Provide Immediate Benefit Against Climate Change

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Reducing emissions of black carbon soot and ground-level ozone would quickly make a considerable dent in the climate change problem and would also contribute to public health and protect crop yields, according to an essay in the September/October issue of Foreign Affairs. Besides a danger to breathe, ozone lowers crop yields.

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HEI: 95%+ of world’s population live in areas of unhealthy air

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Ozone, another important component of outdoor air pollution, whose levels are on the rise around the world, contributed to 234,000 deaths from chronic lung disease. Population-weighted seasonal average ozone concentrations in 2016. coal, wood, and dung) for cooking and heating. coal, wood, and dung) for cooking and heating.

Pollution 218
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Why Schools Should Electrify Their Bus Fleets

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Thanks to the Infrastructure Investment and Jobs Act’s (IIJA), there is $5 billion available in funding for clean school buses. If an EV is charged with electricity that is produced by burning fossil fuel such as coal or natural gas, there are still greenhouse gas emissions associated with running the vehicle.

Fleet 123
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International study identifies 14 key measures to reduce methane and black carbon emissions; reduction in projected global mean warming of ~0.5 °C by 2050

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Black carbon, a product of burning fossil fuels or biomass such as wood or dung, can worsen a number of respiratory and cardiovascular diseases. Methane is both a potent greenhouse gas and an important precursor to ground-level ozone. Ozone, a key component of smog and also a greenhouse gas, damages crops and human health.

Carbon 257
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Researchers describe the “where” and “when” of life cycle emissions from gasoline and ethanol in the US

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Contributions of regions to total life cycle emissions for three fuels (µg per vehicle-mile traveled per km 2 land area). 60% of ground-level ozone (O 3 ) precursors, 6% of fine particulate matter (PM 2.5 ), and 22% of greenhouse gases (GHGs) emitted. Dashed lines show US average emissions. Credit: ACS, Tessum et al. Click to enlarge.

Gasoline 236
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IPCC: GHG emissions accelerating despite mitigation efforts; major institutional and technological change required to keep the heat down

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Decomposition of the decadal change in total global CO 2 emissions from fossil fuel combustion by four driving factors; population, income (GDP) per capita, energy intensity of GDP and carbon intensity of energy. Increased use of coal relative to other energy sources has reversed the long? Hydrogen fuels from low?carbon

Emissions 257