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UCI-led study finds California’s strict air quality regulations have helped farmers

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Researchers at the University of California, Irvine and other institutions have conducted a statistical analysis of pollution exposure and yields from 1980 to 2015 on a key sector making up about 38% of the state’s total agricultural output: perennial crops such as almonds, grapes, nectarines, peaches, strawberries and walnuts.

Ozone 186
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Researchers discover that a ubiquitous tire rubber–derived chemical is killing coho salmon in urban waterways: 6PPD-quinone

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A team led by researchers at the University of Washington Tacoma, UW and Washington State University Puyallup have found that a highly toxic oxidation product of tire rubber particles turns streams toxic and may be responsible for the annual die-offs observed among migrating adult salmon across the US Pacific Northwest.

Ozone 276
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Study: consumer products overtake transportation as largest source of VOCs air pollution in cities

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Consumer products such as shampoo, cleaning products and paint now contribute as much to emitted volatile organic compounds (VOCs) in cities as tailpipe emissions from vehicles, according to a new study led by NOAA. 1A) and sales data of volatile chemical products. —McDonald et al.

Pollution 264
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UC Davis Begins $2.8M Studies on Impacts of Escaped Nitrogen

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University of California, Davis researchers will receive $2.8 million in new grants to study the use and impacts of escaped nitrogen from agricultural production. These environmental impacts are not fully documented, according to Tom Tomich, director of the Agricultural Sustainability Institute at UC Davis.

Davis 240
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Study first to quantify amount of US pollution resulting from Chinese manufacturing for exports

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Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. When you buy a product at Wal-Mart, it has to be manufactured somewhere. The product doesn’t contain the pollution, but creating it caused the pollution. —Steve Davis, UC Irvine Earth system scientist and co-author.

Pollution 318
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Field study finds soot particles absorb significantly less sunlight than predicted by models; climate models may be overestimating warming by BC

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The results highlight the early challenges in a nascent sector of climate science and could have implications for regulatory efforts to reduce the production of black carbon, or soot, by curbing the burning of fossil fuels. Cappa, a professor of engineering at the University of California, Davis, and Timothy B. Click to enlarge.

Climate 261