Apply to the Columbia University Earth Institute Postdoctoral Fellowship program for an opportunity to work with Clean Air Toolbox researchers on solutions-oriented work for cleaner air in cities. Contact individual Clean Air Toolbox researchers working in your sub-area of interest, or email Principal Investigator Prof. V. Faye McNeill (vfm2103 at columbia dot edu).
![](https://aqtoolbox.org/wp-content/uploads/2019/09/IMG_20100702_1330091-1600x1200.jpg)