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International study finds air pollution leads to millions of hospital visits for asthma attacks worldwide

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Air pollution—specifically PM 2.5 , ozone and NO 2 —could be to blame for up to 33 million emergency asthma attack visits to hospital a year, according to a new open-access study published in the journal Environmental Health Perspectives. Approximately 95% of the world’s population lives in places with unsafe air.

Pollution 207
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Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

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NO x emissions have not been decreasing as expected in recent years (2011–2015) when comparing top-down estimates from satellites and surface NO 2 measurements to the trends predicted from the US Environmental Protection Agency’s emission inventory data, according to a new study by an international team of researchers.

Emissions 150
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New international study finds lab testing of diesel NOx emissions underestimates real-world levels by up to 50%

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in collaboration with scientists at the University of York’s Stockholm Environment Institute (SEI); University of Colorado; and the International Institute for Applied Systems Analysis, assessed 30 studies of vehicle emissions under real-world driving conditions in 11 major vehicle markets representing 80% of new diesel vehicle sales in 2015.

Diesel 230
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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. Determining effective strategies for mitigating surface ozone (O 3 ) pollution requires knowledge of the relative ambient concentrations of its precursors, NO x , and VOCs. Credits: NASA’s Earth Observatory /Josh Stevens. Click to enlarge.

Ozone 150
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Researchers say policies to curb short-lived climate pollutants could yield major health benefits; methane and black carbon

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They also contribute to air pollution that harms the health of billions of people worldwide and reduces agricultural yields. Shindell, professor of climate science at Duke University’s Nicholas School of the Environment, co-authored the paper with colleagues from the Institute for Governance & Sustainable Development in Washington, D.C.;

Climate 150
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EPA honors winners of the 20th Annual Presidential Green Chemistry Challenge; advanced biofuels

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The US Environmental Protection Agency (EPA) honored the six 2015 Presidential Green Chemistry Challenge Award winners at a ceremony in Washington, DC. For 2015, EPA announced a new award category for a green chemistry technology that has a “Specific Environmental Benefit: Climate Change.” Professor Eugene Y.-X.

EPA 150