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USC study finds particulate matter in air pollution affects thyroid development in fetuses

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In a cohort study of a subset of 2050 newborns from the Children’s Health Study in southern California, researchers at the University of Southern California (USC) found that an increase of 2 standard deviations in prenatal exposure to particulate matter in air pollution was associated with higher newborn total thyroxine (TT4) measures.

Pollution 301
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FCA recalls 850,000+ gasoline vehicles due to problem with catalytic converters

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The recall was announced after an investigation by the California Air Resources Board (CARB) and the US Environmental Protection Agency (EPA). There are about 50,000 of these vehicles in California. But in California, drivers who fail to get the necessary repairs will not be able to register their vehicles.

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MIT study says combustion emissions cause ~200,000 premature deaths/year in US; vehicles and power generation top sources

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emissions from combustion sources such as industrial smokestacks, vehicle tailpipes, marine and rail operations, and commercial and residential heating throughout the United States cause about 200,000 (90% CI: 90,000–362,000) premature deaths each year, with another 10,000 (90% CI: ?1,000 53,000 (90% CI: 24,000–95,000) PM 2.5

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California ARB and NOAA Collaborating in $20M Research on Interaction of Air Pollution and Climate Change; One Atmosphere Approach

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The California Air Resources Board (ARB) and the National Oceanic and Atmospheric Administration (NOAA) are collaborating in the $20-million CalNex research project to examine the nexus between air pollution and climate change. The complex roles that ozone and aerosols play in the atmosphere provide examples of such trade-offs.

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Study Links Springtime Ozone Increases Above Western North America to Emissions in Asia

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Springtime ozone distributions for 1984, 1995–2008 in the mid-troposphere (3.0–8.0 Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. The US EPA recently proposed new tougher ground-level ozone standards.

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Portable sensors enable monitoring of pollution on smart phones; inferring pollution maps with greater granularity

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Boxes represent pollution reading locations during that window. Computer scientists at the University of California, San Diego have built a portable pollution sensors that transmit transmit their air quality readings to smart phones, allowing users to monitor air quality in real time. Nikzad et al. Click to enlarge.

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US reaches $1.5B settlement with Daimler AG over emissions cheating in Mercedes-Benz diesels; civil penalty of $875M

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The US Environmental Protection Agency (EPA), USDepartment of Justice (DOJ), and California Air Resources Board (CARB) announced a proposed settlement with Daimler AG and its American subsidiary Mercedes-Benz USA, LLC resolving alleged violations of the Clean Air Act and California law associated with emissions cheating.