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

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This new global emission estimate is startling. 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.

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Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

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Thus, the researchers concluded, switching from PFI to GDI vehicles will likely lead to a reduction in net global warming. We estimate ozone and SOA formation potential. Therefore, the secondary organic aerosol and ozone formation potential of the exhaust does not depend on engine technology. —Saliba et al.

Fleet 207
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Study links air pollution to increased emergency department visits for heart and lung disease

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Mason Assistant Professor of Global and Community Health Dr. Jenna Krall led the research with colleagues from Emory University, Georgia Institute of Technology, and the University of Pittsburgh. ozone and sulfate) origin and cardiorespiratory emergency department (ED) visits for 8 specific outcomes in five U.S.

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