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MIT researchers build model simulating atmospheric transport of PAHs; how chemicals get to the Arctic

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MIT researchers have built a model to simulate long-range atmospheric transport of polycyclic aromatic hydrocarbons (PAHs). Persistent organic pollutants are chemicals of substantial international concern. The presence of these pollutants in the Arctic is important for several reasons.

MIT 218
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Cambridge-MIT Study Attributes ~8,000 Premature Deaths Per Year to Aircraft Cruise Emissions

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A study by a team from the University of Cambridge (UK) and MIT attributes ~8,000 premature mortalities per year to aircraft cruise emissions. However, recent regional modeling work indicates that cruise emissions may contribute a significant fraction of aircraft-accountable ground-level pollutant concentrations on a regional scale.

MIT 239
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Separate MIT, IEA reports both outline major expansion in role of natural gas; caution on climate benefits

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Separately, the International Energy Agency (IEA) released its own report exploring the potential for a “golden age” of gas. ” The MIT report said that natural gas should be seen as a “ bridge ” to a low-carbon regime, rather than as the ultimate long-term solution itself. MIT: The Future of Natural Gas.

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New analysis finds Asia produces twice as much mercury emissions as previously thought

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New analysis by an international team led by MIT researchers shows that Asia now releases a surprisingly large amount of anthropogenic mercury. The result of this work, researchers say, could improve estimates of mercury pollution, and help refine pollution-control strategies around the world. —Noelle Selin.

Mercury 150
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Study: marine cyanobacteria produce 100s of millions of tonnes of hydrocarbons annually

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An international team of researchers, led by the University of Cambridge, has estimated that photosynthetic marine cyanobacteria annually produce hundreds of millions of tonnes of hydrocarbons in the oceans. These organisms in turn support another population of bacteria that feed on these compounds.

Mariner 150
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How Remote Sensing Technologies Increase Food Production

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Her dissertation focused on developing methods to determine a baseline for concentrations of pollutants in the atmosphere based on historical spatial-temporal measurements. Mildred Dresselhaus worked at MIT, which she joined in 1960 as a researcher in its Lincoln Laboratory Solid State Division, in Lexington, Mass. She earned her Ph.D.

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The New Supersonic Boom

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The main obstacles will be regulatory and, especially, environmental: Supersonic airliners could be hugely more polluting than their subsonic counterparts. government established a Supersonic Transport Advisory Committee, which began discussions with international partners about building a supersonic airliner.