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Study finds modifying urban form may be a strategy to reduce air pollution

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As an example, if Christchurch, New Zealand matched the urban form of Indio - Cathedral City, California, the models suggest that Christchurch’s NO 2 concentrations would be ∼60% higher than its current level. As such, cities are a focal point for understanding and addressing environmental health issues. —Bechle et al.

Pollution 231
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Study finds global rivers and streams emitting 3x IPCC estimates of the GHG N2O

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Nitrous oxide is a potent greenhouse gas that contributes to climate change and stratospheric ozone destruction. The global warming potential of nitrous oxide is 300-fold greater than carbon dioxide; nitrous oxide accounts for some 6% of human-induced climate change, scientists estimate. Beaulieu et al.

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Researchers Determine Process Through Which Hydrocarbon Compounds Emitted by Trees Form Aerosols, With Impact on Human Health and Climate

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A team of researchers from the US, Denmark and New Zealand have discovered a process through which a prevalent biogenic nonmethane hydrocarbon compound emitted by trees—isoprene—forms atmospheric particulate matter (i.e., Modeled yield of epoxides from the reaction of isoprene and OH. Paulot et al. Click to enlarge.

Climate 150