Faculty
![Carsten Prasse man standing outisde against wall the Johns Hopkins sign in background](/sites/default/files/styles/people_card_360/public/2022-05/carsten-prasse-horizontal.jpg?h=7eabb7da&itok=uKwvHip2)
Carsten's research focuses on the occurrence and fate of organic contaminants in the urban water cycle and their impact on environmental and human health.
![Sarah Preheim close up of woman smiling standing outdoors](/sites/default/files/styles/people_card_360/public/2022-05/sarah-preheim_0.jpeg?h=2ab9529e&itok=m-uB-39W)
Sarah studies the microorganisms and environmental drivers of impairments to inland and coastal water bodies such as oxygen depletion and algal blooms.
![Lesliam Quirós-Alcalá Lesliam Quirós-Alcalá](/sites/default/files/styles/people_card_360/public/images/3864.jpg?h=3e23b8fd&itok=0sTB5vJK)
Lesliam Quirós-Alcalá, PhD, MSc, applies exposure science and environmental epidemiology to study chemical exposures’ health effects in underrepresented populations.
![Harihar Rajaram man smiling standing in front of chalkboard with mathematical equations](/sites/default/files/styles/people_card_360/public/2022-05/harihar-rajaram.png?h=bbfd5eb3&itok=28bd8lM3)
Harihar uses mathematical models to shed light on complex environmental and earth systems and to predict future trends within those systems.
![Gurumurthy Ramachandran Gurumurthy Ramachandran](/sites/default/files/styles/people_card_360/public/images/3348.jpg?h=b1f482cc&itok=LLwWP2J8)
Gurumurthy Ramachandran, PhD, MS, conducts research focused on developing effective and accurate methods to assess health-related human exposure in occupational and non-occupational settings.
![Ruggero Rossi, EHE Assistant Professor male faculty standing outside college campus](/sites/default/files/styles/people_card_360/public/2023-02/jhu5209.jpg?h=88ac1a36&itok=T_HFki76)
Ruggero Rossi works at the intersection of electrochemistry, microbiology, and material science to achieve a sustainable energy-water infrastructure, and environmentally sustainable production of chemicals.
![Ana Rule Ana Rule](/sites/default/files/styles/people_card_360/public/images/1984.jpg?h=191059c3&itok=d-rtO4h_)
Ana Rule, PhD ’05, MHS '98, focuses on the development and evaluation of novel sampling and analysis strategies for assessments of exposure to biological aerosols, e-cigarette aerosols, and particulate matter.
![Kellogg Schwab Kellogg Schwab](/sites/default/files/styles/people_card_360/public/images/813.jpg?h=ea95bb15&itok=hxIgb8w6)
Kellogg Schwab, PhD, integrates engineering, public health, and human behavior by researching water and wastewater contaminants of public health concern.
![Brian Schwartz Brian Schwartz](/sites/default/files/styles/people_card_360/public/images/624.jpg?h=bf372811&itok=agZRoKYC)
Brian Schwartz, MD, MS, GME ’90, uses environmental epidemiology to evaluate the drivers of sustainability health impacts, such as energy, agriculture, and built environments.
![Tara Sell Tara Sell](/sites/default/files/styles/people_card_360/public/images/3498.jpg?h=bc816b12&itok=K0mylkli)
Tara Kirk Sell, PhD '16, MA, uses research to improve preparedness and response to pandemics and disasters. She is also an Olympic silver medalist.
![Shilva Shrestha](/sites/default/files/styles/people_card_360/public/2023-09/sshrestha.jpg?h=2fd8615c&itok=Z3zP4Iwy)
Shilva's research focuses on innovative biotechnologies to produce bioenergy and biochemicals to substitute fossil fuel-based products, address environmental problems, and strengthen the bioeconomy.
![Fenna Sillé Fenna Sillé](/sites/default/files/styles/people_card_360/public/images/3443.jpeg?h=072221d8&itok=pMlQdlfV)
Fenna Sillé, PhD, studies how environmental exposures change the immune system and increase the risk of respiratory infections and lung cancer.
![Lena Smirnova Lena Smirnova](/sites/default/files/styles/people_card_360/public/images/2681.jpg?h=e585e175&itok=KLkXxoLr)
Lena Smirnova, PhD, researches the development of new methodologies for developmental neurotoxicity testing and understanding gene environmental interactions in autism.