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Researchers use satellite data to show vehicles are an under-recognized source of urban ammonia pollution

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By disrupting normal societal activities such as driving, COVID-19 lockdowns afforded a unique opportunity to study their impacts on the environment. On a national or global scale, most NH 3 pollution comes from agricultural sources, such as livestock manure. The team analyzed satellite readings of NH 3 , as well as NO 2. 1c00730.

Pollution 321
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EPA restores California’s authority to enforce greenhouse gas emission standards for cars and light trucks

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The US Environmental Protection Agency (EPA) reinstated California’s authority under the Clean Air Act to implement its own greenhouse gas (GHG) emission standards and zero emission vehicle (ZEV) sales mandate.

EPA 333
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Forth and Mobility Development partner to launch national EV carsharing program; affordable model for underserved communities

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Forth and Mobility Development Group are creating a national partnership to launch the Affordable Mobility Platform (AMP), which will establish electric vehicle (EV) carsharing based at affordable housing sites in at least five states over the next two years. —Creighton Randall, CEO of Mobility Development.

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NUS researcher links air pollution to increased residential electricity demand

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The study, set in Singapore, suggests that better air quality will bring about climate co-benefits in reducing electricity generation via lower household demand, and thus mitigating carbon emissions. This is important for policymakers when forecasting and influencing future emissions paths in the context of climate change.

Pollution 275
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T&E: tests show cars powered by electrofuels emit high levels of criteria pollutants

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Proponents claim that if renewable electricity is used and CO 2 is captured from the air, then the e-gasoline and e-diesel are climate-neutral fuels that will also reduce pollution. The emissions were compared to the standard E10 EU gasoline. A substantial decrease in particle emissions was observed on all tests. pollution.

Pollution 186
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UCS: ride-hailing trips can produce nearly 70% greater emissions compared to private car trips

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A new report by the Union of Concerned Scientists (UCS) finds that the rising use of ride-hailing services is increasing carbon emissions, with ride-hailing trips producing nearly 70% greater emissions compared to the trips they are replacing. Error bars for bus and rail emissions represent variability among cities. Source: UCS.

Emissions 543
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EPA grants waivers for California’s on-highway heavy-duty vehicle and engine emission standards

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The US Environmental Protection Agency (EPA) is granting two waivers of preemption regarding four California Air Resource Board (CARB) regulations related to California’s heavy-duty vehicle and engine emission standards. In this instance, CARB requested two waivers for regulations relating to heavy duty vehicles and engines.

EPA 210