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A ‘Rosetta stone’ for molecular systems
Prashant Purohit (left) and Penn Engineering’s Celia Reina (right) in front of a whiteboard.

Penn Engineering’s Prashant Purohit (left) and Celia Reina.

(Image: Bella Ciervo)

A ‘Rosetta stone’ for molecular systems

Penn Engineering’s Prashant Purohit (left) and Celia Reina (right), in collaboration with recent doctoral graduate Travis Leadbetter, have spent years developing a mathematical “Rosetta stone” that can translate molecular movements into predictions of larger effects.

Ian Scheffler

2 min. read

Can tiny ocean organisms offer the key to better climate modeling?
Researcher Xin Sun injects substance into glass vials.

Xin Sun prepares samples collected from the Eastern Tropical North Pacific aboard a research vessel. By adding stable isotope tracers to these vials, Sun and her team can track how different microbial groups convert nitrogen compounds into nitrous oxide, revealing how subtle shifts in oxygen and organic matter change the ocean’s chemistry.

 
 

(Image: Courtesy of Xin Sun)

Can tiny ocean organisms offer the key to better climate modeling?

In the shadowy layers of the Pacific, microbes decide how much nitrous oxide—a potent greenhouse gas—rises skyward. New research from Penn’s Xin Sun offers an improved understanding of microbial ecology and geochemistry—key to forecasting global emissions in response to natural and man-made climate change.

3 min. read

Penn Engineering’s Dohyung Kim named 2025 Packard Fellow for Science and Engineering

Penn Engineering’s Dohyung Kim named 2025 Packard Fellow for Science and Engineering

The assistant professor in chemical and biomolecular engineering has been named a 2025 Packard Fellow for Science and Engineering by the David and Lucile Packard Foundation. Kim leads the Kim Laboratory of Electrochemistry and Interfaces at the Nanoscale, which investigates how chemical reactions occur on the surfaces of solid catalysts—materials that drive processes central to energy production, fuel generation, and chemical manufacturing.

Two Penn faculty elected American Physical Society Fellows
Ritesh Agarwal and Doug Jerolmack.

Ritesh Agarwal (left), Srinivasa Ramanujan Distinguished Scholar in Materials Science and Engineering, and Douglas Jerolmack, Edmund J. and Louise W. Kahn Endowed Term Professor of Earth and Environmental Science and professor of mechanical engineering and applied mechanics.

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Two Penn faculty elected American Physical Society Fellows

Ritesh Agarwal of the School of Engineering and Applied Science and Douglas Jerolmack of the School of Arts & Sciences and Penn Engineering have been elected by their peers in recognition of their contributions to the field.

2 min. read

Inspiring interest in water quality at Cobbs Creek
Two people in waders in Cobbs Creek getting water samples.

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Inspiring interest in water quality at Cobbs Creek

Faculty and staff, high school and Penn students, and community members are working together to collect and analyze the most detailed water quality data to date at the West Philadelphia stream.

4 min. read

A world shaped by water and access
Three people test water below a sand dam.

Griffin Pitt, right, works with two other student researchers to test the conductivity, total dissolved solids, salinity, and temperature of water below a sand dam in Kenya.

(Image: Courtesy of Griffin Pitt)

A world shaped by water and access

Griffin Pitt’s upbringing made her passionate about water access and pollution, and Penn has given her the opportunity to explore these issues back home in North Carolina and abroad.

3 min.

A built-in ‘off switch’ to stop persistent pain
Brain imaging

Collaborative research on the neural basis of chronic pain led by neuroscientist J. Nicholas Betley finds that a critical hub in the brainstem, has a built-in “off switch” to stop persistent pain signals from reaching the rest of the brain. Their findings could help clinicians better understand chronic pain. (Pictured) Flurorescence imaging reveals hunger neurons in the arcuate nucleus of the hypothalamus labeled in maroon with nuclei shown in blue.

(Image: J. Nicholas Betley)

A built-in ‘off switch’ to stop persistent pain

J. Nicholas Betley has led collaborative research seeking the neural basis of long-term sustained pain and finds that a critical hub in the brainstem holds a mechanism for stopping pain signals from reaching the rest of the brain. Their findings could help clinicians better understand chronic pain and lead to new, more efficacious treatments.

4 min. read

Students test one way to combat extreme heat in Philadelphia
Nafisa Bangura (left) and Angelica Dadda (right) doing hands-on experimental work in the Composto Lab.

Nafisa Bangura (left) and Angelica Dadda (right) examine CoolSeal-treated asphalt bricks in the Composto Lab to better understand how this coating behaves in controlled environments.

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Students test one way to combat extreme heat in Philadelphia

Third-year students Nafisa Bangura and Angelica Dadda expanded upon a multidisciplinary research endeavor to evaluate a reflective pavement coating as a tool to mitigate extreme heat. Their work may inform policy efforts to improve urban heat resilience.

4 min. read