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Where math meets biology
a person standing in a hallway lit with natural light

Where math meets biology

Through his research, Yoichiro Mori, the Calabi-Simons Visiting Professor of Mathematics and Biology, demonstrates how mathematical theories can provide insights into complex, living systems.

Erica K. Brockmeier

A missing link in haze formation
A mountain foregrounds the Los Angeles skyline, shrouded in haze

A veil of haze shrouds the skyline of downtown Los Angeles. Research from Penn chemists provides new details about how this kind of particle pollution forms in the atmosphere (Image: Diliff/CC 2.0, via Wikimedia Commons)

A missing link in haze formation

Hazy days don’t just block the view; they mean the air contains particulate matter that can compromise human health. Chemists have discovered a way that alcohols can balance out the formation of new particles, a finding that could improve the accuracy of air-quality forecasts.

Katherine Unger Baillie

As good as new at Penn Closet
Two people standing bewteen two clothing racks in a crowded thrift shop space. On the back wall, the word "U Lounge" hangs in brightly colored block letters.

Penn Closet, the thrift shop in Williams Hall, is run by eight students, including Marcela Gomez (left) of Guatemala City, who is director of operations, and Emily Yao of Taipei, who is director of marketing. 

As good as new at Penn Closet

The student-run thrift shop on the ground floor of Williams Hall gives clothes and other items a second life, plus offers donators and shoppers a simple way to practice sustainability.

Michele W. Berger

Penn senior and May graduate win 2020 Rhodes Scholarship
Nurul Ezzaty Binti Hasbullah (left) and Stephen Damianos

Penn senior Nurul Ezzaty Binti Hasbullah (left) and May graduate Stephen Damianos have been named Rhodes Scholars to attend Oxford University. 

Penn senior and May graduate win 2020 Rhodes Scholarship

Nurul Ezzaty Binti Hasbullah and Stephen Damianos have been awarded Rhodes Scholarships for graduate study at the University of Oxford.

Louisa Shepard , Aaron Olson , Louisa Shepard

Math, stereotypes, and social belonging
person looks perplexed holding a pencil staring into middle distancw with chalkboard behind them with math equations.

Math, stereotypes, and social belonging

Philip Gressman, professor of mathematics, discusses how stereotype threat can affect student performance in math, and how social belonging can curb it.

Penn Today Staff

Using science to make cities safer and healthier
Two people standing in front of a fenced-in vacant lot, one leaning against the fence, the other standing with arms crossed.

Penn Medicine’s Eugenia South, seen here with John MacDonald of the Department of Criminology, studies the effect of chronic stress and neighborhood environment on health outcomes. South’s latest pilot, Nurtured in Nature, follows work from the pair showing that cleaning up vacant lots leads to a signifiant decrease in gun violence and less stress for local residents. (Pre-pandemic photo)

Using science to make cities safer and healthier

In a Q&A, criminologist John MacDonald discusses his new book, grounded in years of research on the positive effects of remediation like fixing up abandoned lots and houses.

Michele W. Berger

Inspiring young women in STEM
a group of people seated at a circle of chairs talking to each other

Inspiring young women in STEM

Over two days, nearly two dozen female STEM role models at Penn welcomed more than 100 high school students and teachers to campus as part of the Girls Advancing in STEM (GAINS) Initiative Conference on campus.

Erica K. Brockmeier

Immersive stories to spur action on climate
Person wearing a virtual reality headset looks to the side, standing next to a statue facing the same direction

In one of four virtual reality pop-up stations around campus this week, sophomore Katie Collier of Orlando takes in a vignette from “The Altering Shores,” which will premier at the PPEH Environmental Storytelling and Virtual Reality festival on Saturday. (Image: Roderick Coover)

Immersive stories to spur action on climate

Organized by the Penn Program in Environmental Humanities (PPEH), a two-day festival, “Environmental Storytelling and Virtual Reality” begins Friday, and will explore how virtual reality and other immersive storytelling might inspire action on climate change.

Katherine Unger Baillie

Demographic shifts, voter fears, and presidential voting
Several adolescents stand under a giant American flag like a parachute aloft at an immigration reform rally.

Demographic shifts, voter fears, and presidential voting

New research shows Donald Trump’s 2016 presidential campaign didn’t benefit from voters’ fears of immigrants in communities experiencing greater demographic change.

Kristen de Groot