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California ARB: GHG emissions fell below 1990 levels for first time in 2016; down 13% from 2004 peak; transportation emissions up 2%

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The California Air Resources Board (CARB) announced that greenhouse gas emissions in California in 2016 fell below 1990 levels for the first time since emissions peaked in 2004—a reduction roughly equivalent to taking 12 million cars off the road or saving 6 billion gallons of gasoline a year.

2004 225
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Study: air pollution may shorten telomeres in newbornsa sign of increased health risks

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A study conducted before and after the 2004 closure of a coal-burning power plant in Tongliang, China, found that children born before the closure had shorter telomeres than those conceived and born after the plant stopped polluting the air. In May 2004, high levels of air pollution in Tongliang prompted the government to shut down.

Pollution 170
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Satellite study: livestock digestion released 70% more methane than oil and gas industry in 2004

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Livestock were the single largest source of methane gas emissions in the United States in 2004, releasing 70% more into the atmosphere than the oil and gas industry as estimated by other inventories, according to a new study by a team from Harvard University, JPL/CalTech and UC Irvine. The EPA estimates that 8.8 megatonnes (9.7 megatonnes (9.9

2004 231
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Large scale epidemiological study associates PM2.5, NO2 pollution with kidney, bladder and colorectal cancer death

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Air pollution is classified as carcinogenic to humans given its association with lung cancer, but there is little evidence for its association with cancer at other body sites. The results were similar in two-pollutant models including PM 2.5 and NO 2 and in three-pollutant models with O 3. μg/m 3 increase in exposure.

Pollution 170
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PM2.5 pollution linked to blood vessel damage in healthy young non-smoking adults

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Fine particulate matter air pollution (PM 2.5 ) may be associated with blood vessel damage and inflammation among young, healthy adults, according to new research in Circulation Research , an American Heart Association journal. Air pollution is known to contribute to cardiovascular disease and related deaths. —Pope et al.

Pollution 150
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10-year study shows how air pollution fosters heart disease; accelerated plaque build-up in arteries

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Long-term exposure to particulate air pollution has been linked to an increased risk of heart disease, but the biological process has not been understood. Participant-specific pollutant concentrations averaged over the years 2000–10 ranged from 9.2–22.6 The study is published in The Lancet. and NO x between 1999 and 2012. μg PM 2.5 /m

Pollution 199
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Decrease in air pollution associated with decrease in respiratory symptoms among children

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Decreases in ambient air pollution levels over the past 20 years in Southern California were associated with significant reductions in bronchitic symptoms in children with and without asthma, according to a study by researchers at the University of Southern California published in JAMA. Kiros Berhane, Ph.D., —Berhane et al.

Pollution 150