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Study from Thuringia shows 50% of harmful soot comes from local sources, 50% from long-distance transport

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From the researchers’ point of view, this underlines the need to further reduce emissions of soot that is harmful to health and the climate, as the carbon-containing particles still contribute to health hazards and climate warming even over distances of several hundred kilometers. forest fires).

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Harvard study finds human health risks from Canadian hydroelectric projects

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The works uses factors such as soil carbon and reservoir design to forecast methylmercury increases for 22 hydroelectric reservoirs under consideration or construction in Canada. Developing Canadian hydroelectric resources is a key component of North American plans for meeting future energy demands with a low carbon footprint.

Mercury 199
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Berkeley study finds renewable portfolio standards insufficient to meet 2030 GHG emission targets; new policy required

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Pie charts show the proportion of different types of energy sources generating power and flowing between load areas if there were a carbon tax of $70 per ton. To meet these carbon goals, coal has to go away from the region. One possible scenario for the electricity system in the Western US in 2026-29. Click to enlarge.

Renewable 231
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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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The proposed revisions were based on scientific evidence about ozone and its effects on people and the environment, and resulted from a reconsideration of the primary and secondary ozone standards set at 0.075 ppm in 2008. Earlier post.) National Ambient Air Quality Standards (NAAQS).

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EEA says industrial air pollution cost Europe up to €169 billion in 2009; some 37% attributed to CO2

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Air pollution from the 10,000 largest polluting facilities in Europe cost citizens between €102–169 billion (US$135–224 billion) in 2009, according to a new report from the European Environment Agency (EEA) which analyzed the costs of harm to health and the environment caused by air pollution. Log scale) Source: EEA.

Pollution 268
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Stanford launches major new natural gas research initiative

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The new program will expand Stanford’s research on energy and the environment by focusing additional resources on the growing importance of natural gas. Compared with burning coal, natural gas emits about half the carbon dioxide and substantially less soot, mercury and sulfur.

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PCAST suggests 6 key components for climate change strategy to President Obama; adaptation and mitigation

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Continue implementation of Clean Air Act requirements on criteria pollutants (such as SO 2 and NO x ) and hazardous air pollutants (such as mercury) to include creating new performance standards for CO2 emissions from existing stationary sources, which would follow the performance standards for new plants released in March 2012.