We began publication of our International Journal, Air Quality, Atmosphere & Health (AQAH) in 2008. Now, at the 8-year mark, we write to give you a progress report and to thank you for your support. We are pleased to announce that AQAH will now be published bi-monthly rather than quarterly, starting with the first issue of volume 8. This change reflects the large number of high-quality submissions and your support.

Our journal has now achieved a key international standard. The Impact Factor (Thomson Reuters Journal Citation Reports®) of the AQAH was 1.979 in 2012 and 1.455 in 2013. We are delighted with this initial level of citation and will be taking every step possible to advance the recognition of the important articles that we are publishing. Presently, the rate of acceptance of all submitted manuscripts is 36 %, reflecting the proficiency and efficiency of the guidance from our reviewers. We are very much encouraged by these achievements in such a short period, and we must thank our authors, reviewers, and readers of the international scientific community for their dedication and support.

The papers published by AQAH address highly significant topics, as air pollution remains an important local, national, and global problem. Background concentrations of both major air pollutants and greenhouse gases continue to rise overall, although there is improvement in some countries. We note with concern that billions of people are still exposed to extremely high concentrations of air pollution indoors and outdoors. Each year, large numbers of people are adversely affected by high concentrations of toxic air pollutants, and many die prematurely from hazardous emissions. The severity of this global crisis and the challenges and hope to bring cleaner air to the world are the motivation behind the works of our contributors.

The journal has been privileged to publish the findings of researchers from many countries across five continents. We thank our reviewers, associate editors, and members of the editorial board for their tireless efforts to foster the growth of the journal. We also thank Springer for help in initiating and sustaining AQAH. Above all, we thank the authors, reviewers, and readers for choosing the AQAH as your global forum for the advancement of air quality and health sciences. We look forward to your continued support of our mission.

Y S Chung and J M Samet

Editors-in-Chief