Publications

HEI Research Report 187 was funded as part of HEI’s Accountability research program, aimed at understanding whether actions to improve air quality have resulted in improved health outcomes. Corwin M. Zigler and his colleagues used existing and newly developed statistical methods to assess whether an intervention was causally related to changes in pollutant levels or health outcomes, and applied their methods in two well-developed case studies: effects of air quality interventions to reduce PM₁₀ concentrations in nonattainment areas and the impact of installation of scrubber technologies on emissions from coal-fired power plants.

This report is Part 3 of HEI Research Report 183, Development of Statistical Methods for Multipollutant Research. It describes a study to develop and apply statistical methods to analyze the effects of multipollutant exposures on health, expanding beyond the two-pollutant approaches used in many studies to date. HEI funded three innovative studies in recent years to improve the tools for analyzing complex multipollutant exposures. In this last report from these studies, John Molitor and colleagues describe a Bayesian framework to identify spatial clusters of air pollution exposures — and other covariates such as socioeconomic status — and estimated pregnancy outcomes associated with those clusters, using a data set for Los Angeles county. 

The 2015 Annual Report – Vision 2020 - describes HEI’s partnership with scientists, government, industry, and the environmental community to provide high-quality, impartial, and relevant science to inform public policy decisions about air quality and public health. The report highlights the vision underlying HEI’s Strategic Plan 2015-2020 and outlines HEI’s contributions in the past year to important questions.

This Executive Summary of the Advanced Collaborative Emissions Study (ACES) summarizes the main findings of emissions and health testing of new-technology heavy-duty diesel engines capable of meeting US 2007/2010 and EURO VI/6 diesel emissions standards. The results demonstrated the dramatic improvements in emissions and the absence of any significant health effects (especially cancer). ACES was the most comprehensive examination done to date of engines meeting the US 2007 and 2010 on-road standards.

This newsletter reports on the approval of new HEI studies to examine potential health effects of low-level pollution; the completion of a review of diesel exhaust studies (Special Report 19) by an HEI-appointed panel; and WHO's plans to update global air quality guidelines. In addition, it announces the publication of an HEI report taking a closer look at exposure to PM_2.5 and its composition and a report evaluating rapid heart rhythm changes after exposure to PM. HEI also announces the recipient of the 2015 Walter A. Rosenblith New Investigator Award and the appointment of three new HEI Research Committee members.

This issue reports on the publication of an Executive Summary highlighting ACES new-technology diesel results, which describes significant improvements in new diesel engines; a conference showcasing HEI science and emerging research opportunities; interest worldwide in ACES findings; how HEI staff are communicating results; the status of the oil and gas research agenda being drafted by HEI; and the status of the MOSES testing of ozone study subjects.

Contents: HEI's Strategic Plan for 2015–2020 Now Under Way;  Greenbaum Chairs NRC Review of U.S. Climate, Health Assessment; O'Keefe Closes Out Successful Run on Key Air Advisory Committee; Communicating Results - HEI Science Highlighted at EPA Workshops HEI in the News - Wide Audience for ACES Findings; Novel Statistical Methods for Studying Pollutant Mixtures; Journal Spotlights NPACT Studies; Eyes on the Future - HEI Sponsors Meet with Research Committee to Discuss the Path Forward;  Walter A. Rosenblith New Investigator Award Announced

Contents: Major Report on Newest Diesel Engines - No Evidence of Lung Cancer in Rats after Lifetime Exposure to New-Technology Diesel Exhaust; Sign Up Now for HEI's Annual Conference 2015 in Philadelphia in May; Nominations for Committee Membership Invited; Progress on Strategic Research Plan for Oil and Gas; Better Air Quality Meeting in Sri Lanka

This report is a study focused on lung tissue repair processes after inflammation and injury resulting from exposure to particulate matter (PM) from combustion sources. Dr. Thomas H. Barker of Georgia Institute of Technology, a recipient of HEI's Walter A. Rosenblith New Investigator Award, and his colleagues tested the hypotheses that alveolar epithelial cells grown on substrates of increasing stiffness would transition to mesenchymal cells — an early step along the pathway to fibrosis — and that the addition of fine PM would enhance these effects.

Contents: Conference Eyes Future of Air Pollution Research, Policy; Leading Health Expert to Chair Review Committee; Workshop on Unconventional Oil and Gas Development; Developing New Models for Ultrafine Particles and Air Toxics Exposures; Sharing Insight from NPACT Setting Research Priorities (Research Planning Meeting); HEI in the News; HEI Strategic Plan 2015-2020 Taking Shape

This report describes a study to identify factors that influence exposure to volatile organic compounds (VOCs) and VOC mixtures. Dr. Stuart Batterman at the University of Michigan–Ann Arbor and colleagues used the extensive data that HEI posted on the Web from the Relationships of Indoor, Outdoor, and Personal Air (RIOPA) study (HEI Research Report 130 Parts I and II), and data from the National Health and Nutrition Examination Survey (NHANES), to characterize exposure distributions for 15 VOCs, with an emphasis on high concentrations. Factors examined included geographic location, weather, characteristics of participants' homes, and specific activities, such as pumping gas.