Libby H. Koolik (she/her) is a PhD student in Environmental Engineering, researching air pollution policy interventions in environmental justice communities in California. Originally from South Florida, she received her B.S. in Earth, Atmospheric, and Planetary Sciences and her M.Eng. in Environmental Engineering at MIT before moving to Berkeley in 2018 to work as an environmental consultant in the Bay Area. Now at Berkeley, she works at the intersection of air pollution science, data science, and public health to determine key policy mechanisms for advancing equitable air quality. In her free time, she enjoys reading, hiking, baking vegan treats, and playing with her two cats.