common good

Brion Dorsey moves liquid from a pipette into a beaker in a lab.
Messiah Muhammad examines a plant through a magnifying glass.
Laurence kesterson
This summer’s Chester Children’s Chorus programming culminated in the final week of July with the Liz Vallen Science for Kids Poster Session, showcasing the students’ hard work and the always-popular concert series. From left: Fifth-grader Brion Dorsey and fourth-grader Messiah Muhammad.

more than music at this vibrant summer Camp

Each summer, Swarthmore welcomes a new — and much younger — group of students, filling campus with joy, music, and palpable energy. More than 120 children and youth in grades 3-12 from nearby Chester spend weekdays participating in a unique and intensive Summer Learning Program (SLP) with the Chester Children’s Chorus (CCC). Founded and led by Executive and Artistic Director John Alston H’15, the CCC provides year-round music and math education to Chester children, many of whom consider the SLP a program highlight. “For five weeks every summer, Swarthmore College becomes a second home for our children,” says Alston. “Surrounded by care, encouragement, and possibility, they spend their days singing, learning, growing, laughing, and building friendships. The children love CCC summers on campus, where they feel seen, supported, and inspired.”

In addition to learning music and math, the children are immersed in reading, swimming, art, science, photography (led by Senior Media Center Manager Jeremy Polk), and cooking, held in the new Sharples Test Kitchen. Children move throughout campus working alongside College faculty, staff, and students via the Scott Arboretum class, the John Wehmiller Creative Photography Program, and the Liz Vallen Science for Kids Program, honoring the late Swarthmore biology professor who led the program for decades. The SLP is offered at no cost to CCC families and includes meals, round-trip transportation, and field trips. Ending on a high note, the program culminates with summer concerts and photography, art, and science exhibits.

— CHRISTINA MEEHAN

+ WATCH an encore performance and learn more about the CCC at ChesterChildrensChorus.org

NIH Grant Advances Ethical Toxicology Research

at first glance, flatworms seem quite unlike humans, but Associate Professor of Biology and Adjunct Associate Professor of Physics & Astronomy Eva-Maria Collins is uncovering valuable insights into human health by studying these invertebrates. Collins received a $391,640 grant from the National Institutes of Health/National Institute of Environmental Health Sciences to advance her research using planarians, or flatworms, to study the toxicity of organophosphorus pesticides, a class of insecticides that are widely used in agriculture. Collins says students can look forward to this research as it has a direct connection to their everyday lives, including their food, environment, and health. Chronic exposure to this class of pesticides has been associated with developmental neurotoxicity and long-term neurological problems in humans. However, a solution is not so simple as eradicating the use of pesticides. “Pesticides play an important role in our lives, to control pests in agriculture and parks,” Collins explains, “but it is important to understand how they affect organisms, including humans, and to determine what levels of exposure are okay and when exposure becomes harmful, so we can take measures to protect us and the environment.”

— CARA ANDERSON

A Life Devoted to Science: David Baltimore ’60, H’76

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obel laureate David Baltimore ’60, H ’76, a towering and influential figure in the field of microbiology and an advocate of liberal arts education, died Saturday, Sept. 6, after a long illness. He was 87.

After earning a B.A. with High Honors in chemistry, Baltimore received a Ph.D. from Rockefeller University, where his thesis on establishing ways to study viruses in animal cells was considered a major breakthrough. He later served as president at Rockefeller as well as the California Institute of Technology.

Baltimore shared the 1975 Nobel Prize in Physiology or Medicine with Howard Temin, Class of 1955, and their colleague and former teacher, virologist Renato Dulbecco, for their discoveries concerning the interaction between tumor viruses and the genetic material of the cell.

Temin’s hypothesis — that the RNA of RNA viruses could modify the host cell’s DNA, changing its encoded ge­netic information — was not generally ac­cepted until he and Baltimore demon­strated reverse transcriptase, the en­zyme that mediates the reaction. In Temin’s case, the tumor viruses were Rous sarcoma viruses causing tumors in chickens. Baltimore used viruses causing tumors in mice. They had actually met years earlier when Baltimore was in high school and they both spent a summer at Jackson Laboratory in Maine. In 1970, they simultaneously published their results in the journal Nature.

As Baltimore once described the Nobel experience in the Bulletin, it was “like being in a Fellini movie — as one of the characters!”

Head shot of David Baltimore ’60
Christopher Michel
Nobel laureate David Baltimore ’60, H ’76 died Sept. 6. An early advocate of AIDS research, he had a profound influence on national science policy, spanning everything from stem cell research to cloning.
An early advocate of AIDS research, Baltimore had a profound influence on national science policy, spanning everything from stem cell research to cloning. He was a past president of the American Association of the Advancement of Science, a member of the National Academy of Sciences, and a fellow of the American Academy of Arts and Sciences. Baltimore focused his later work on the control of inflammatory and immune responses, the roles of microRNAs in the immune system, and the use of gene therapy methods to treat HIV and cancer. He was awarded the National Medal of Science for his prodigious contributions to science in 1999.

Baltimore, who served as vice chair of the Board of Managers from 1986 to 1989, returned frequently to speak on campus, especially to discuss why scientists need a liberal arts education. When addressing the Class of 1976 at their Commencement, he said: “In spite of the great satisfaction in science and the frustration of attempting to affect social attitudes, I still believe that a complete life requires both activities. It is the essence of a liberal arts education to instill beliefs in both right and truth.”

In 2007, the David Baltimore/Broad Foundation Endowment was established by a grant from the Broad Foundation at his request. The fellowship is awarded to a Swarthmore student doing summer research in the natural sciences or engineering, with a preference given to a student engaging in mentored off-campus laboratory research — experiences he enjoyed himself and credited with fueling his own passion for a life devoted to science.

“David continued to be impressed by the research carried out by Swarthmore students and faculty and by the lifelong relationships that students and their mentors maintained,” says Isaac H. Clothier Jr. Professor Emerita of Biology Amy Cheng Vollmer, who had many interactions with him and his wife, Alice Huang, over the years. After his death, Vollmer says she was contacted by at least two dozen alumni who had met him on campus at the Science Center’s 2005 dedication. “Many remembered that he took the time to ask about their research projects,” she says, “and encouraged them to continue in research after they graduated.”

Reflecting once on his time at the College, Baltimore said: “I guess the thing I’ll always remember best about Swarthmore is the marvelous time we all had, while we were getting a handle on the things we were going to do in life.”

— ALISA GIARDINELLI

Osazenoriuwa Ebose '15 speaks into a microphone
Alumnae enjoy beverages outside on a windy day
Alumnae rejoice in being together again
Class of 2021 marches with their banner in the Parade of Classes
Phineas the Phoenix in front of Parrish Hall
Jim Sailer ’90 speaks from a podium
Sean Decatur ’90 addresses the Alumni Weekend audience

Alumni Weekend

“You Are Here.” Alumni, families, and friends gathered on campus from May 29 – June 1 for Alumni Weekend 2025, a joyful celebration of community and milestone reunions.

The reunion theme, “You Are Here,” asked attendees to ponder how their individual Swarthmore stories and experiences remain a foundational part of the College, even as the campus experiences significant changes, including the opening of Sharples Commons, the renovation of Martin Hall, and the ambitious projects of To Zero by Thirty-Five. More than 1,300 attendees from the Classes of 1955 through 2025 took part in the festivities, including the ever popular and festive Parade of Classes.

For many, this year’s Alumni Weekend was a meaningful opportunity to make up for lost time, including, for the Class of 2020, to reunite for the first time since the onset of the COVID-19 pandemic in March 2020. We are grateful to this year’s reunion committee members, whose tireless dedication, creativity, and care made it possible for classmates to reconnect in meaningful, joyful, and inclusive ways and helped make Alumni Weekend a resounding success for all. Photos by Laurence Kesterson and Robert O. Williams

Alumni stand outside/on Clothier Memorial Bell Tower steps, facing away from the camera and towards the light.
Alumni making music on a bench outside.
Children chase bubbles across the lawn

Look Closely. See the World.

The top half of this image is a black and white photo of a statue, possibly the Statue of Liberty, from the back. In the bottom right corner, an orange image of the Statue of Liberty’s face is screenpainted. There are blue smudges of paint in the top right and by the Statue of Liberty’s orange face.
©Robert Rauschenberg Foundation and Gemini G.E.L. image courtesy of the national gallery of art

Robert Rauschenberg, “For Ferraro” a 1992 screenprint on paper.

Each week, eva Allan ’00 writes a newsletter called The Vivid Eye. “I look closely at an artwork to investigate what makes it fascinating, whimsical, beautiful, interesting — in short, what makes it tick,” says Allan.

She started The Vivid Eye to teach art history to a broad audience, while hoping to provide an antidote to the fast pace of online life.

“As I was getting more enraged about national politics, I wondered if writing about artwork was overly self-indulgent in the face of mounting injustices,” says Allan. “After some contemplation, I decided to write about this unusually small Rauschenberg silkscreen, “For Ferraro” 1992, with its clear symbolisms and colors of America,” she says.

“I knew Rauschenberg had been an artist involved in political protest, and imagined with new clarity his frustration at the Vietnam War or the cuts to the NEA,” Allan says. “His work became the backdrop as I wrote two equal yet opposite arguments for continuing to look carefully and passionately at artwork during politically troubling, exasperating, and endangering times.”

Her suggestions? “First, looking at art can be a stepping away, a moment of needed rest from the herky-jerky quality of the news,” she says.

“I wondered if writing about artwork was overly self-indulgent in the face of mounting injustices.”
—Eva Allan ’00
“Art remains a reminder of how human creativity endures over much larger time scales, how we have a culture worth our contemplation and preservation.”

Second, the opposite is true: “Close looking at art can prepare us to step closer, to engage more thoughtfully with the onslaught of troubled politics, especially when it seems all over the place,” says Allan. “A sustained look at a detail in an artwork can train our minds to focus. Noticing new details, we might begin to wonder if there is something in our long-held biases that needs revising. We might find renewed energy for the most important ways to engage as citizens in our own corners of the world.”

+ READ MORE: The Vivid Eye: evaallanarts.substack.com
stop the spread

Mosquito Wars

Fighting the reach of mosquito-borne infections
by Chris Quirk
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osquito-borne illnesses kill close to a million people every year, and infect close to 10% of the world’s population, according to the World Mosquito Program. With global warming and the severe weather that comes with it on the rise, the geographic reach of mosquito-borne infections is increasing.

Irene Newton ’02 is studying a remarkable bacterium that is helping to control the spread of severe mosquito-borne diseases such as malaria and dengue fever.

Newton is a professor of biology at Indiana University and leads a team of researchers that study the symbiotic relationships between organisms, one of which is the bacterium Wolbachia (pronounced wool-BOCK-eeya) present in about half the insect species worldwide.

Head shot of Irene Newton ’02
Monette Wagner
“In science, the return on investment for the American taxpayer for every grant dollar is enormous,” says Irene Newton ’02, a biology professor at Indiana University.
What makes Wolbachia so special is that it destroys or renders harmless viruses like Zika and dengue fever, curbing the spread of these diseases. Australia has released Wolbachia-carrying mosquitoes in tropical areas with beneficial results.

“They saw a pretty precipitous drop in dengue occurrence, and have since deployed this kind of approach in what they term ‘mosquito factories’ all over the world to reduce the spread of diseases,” says Newton. The Wolbachia approach is so effective because mosquitoes that have the infection essentially replace the mosquitoes that don’t. “Wolbachia encodes its own mechanisms to spread,” Newton says. “The sperm of infected males basically sterilized these uninfected females, so the infected females have an advantage.”

In every generation, the proportion of infected females rises. Over time, you get 80% to 90% of mosquitoes in an area that will have Wolbachia, and that’s what contributes to the drop in infectious disease.”

One of Newton’s projects is to better understand the means by which a bacterium destroys or disables viruses. “We’re using it as a tool, but we don’t know exactly how Wolbachia is doing this, so we study how Wolbachia modifies the host-cell environment to impinge upon virus replication,” Newton says. “Another part of the lab studies the basic biology of Wolbachia, working to understand how it infects, replicates, and how it’s able to be transmitted. The more we know about these aspects of Wolbachia, the better we can use it to protect people.” Newton’s focus on the scientific fundamentals is a critical part of her research, and one that she says lead to outsized benefits to the public. “I can think of many basic research projects that led to completely new industries,” she says.

A music major when she started at Swarthmore, Newton switched to biology after taking a class with Rachel Merz, now the Walter Kemp Professor Emerita of Natural Science. “I had remembered high school biology as a class about memorization,” Newton recalls. “She opened up the world of science to me, and had a way of explaining things that were beautiful to her in the natural world that was eye-opening and exciting.”

Welcoming Swarthmore’s New Board of Managers Chair

The Swarthmore College Board of Managers has appointed Gustavo “Gus” Schwed ’84 as its next chair. As part of the leadership transition, Schwed will serve as vice chair for the coming academic year before stepping into the role of chair on July 1, 2026. Harold “Koof” Kalkstein ’78 will continue as chair until the end of the 2025–26 academic year. Kalkstein, who has served as a Manager since 2008, will remain on the Board after concluding his term as chair.

Head shot of Gus Schwed ’84

Gus Schwed ’84

Schwed is a professor of management practice at New York University’s Stern School of Business, where he received the school’s distinguished teaching award and has twice been named professor of the year. He also is a visiting professor at Princeton University. Before entering academia, Schwed was a managing director at Providence Equity Partners and Morgan Stanley and served on numerous corporate and nonprofit boards including Oliver Scholars, a nonprofit that supports high-achieving, underserved students in New York City.

A longtime volunteer leader and dedicated alumnus, Schwed served on the Board from 2010 to 2022 and returned in 2024. As a student at Swarthmore, he majored in economics and graduated with high honors before earning an MBA from Stanford University.

Swarthmore also welcomes three new members to its Board: Michael Costonis ’92, Jyothi Das ’92, and Jim Sailer ’90. Together, they bring decades of leadership experience across the private, nonprofit, and global development sectors, along with a deep commitment to the values that have long defined a Swarthmore education.

Students paint a tree pink.

Scott Arboretum & Gardens Rebecca Robert

In the pink: Scott Arboretum & Gardens created its latest ephemeral environmental art piece, Little Princess, in August. Horticulturist Josh Coceano and Arboretum interns painted a lifeless tree an efflorescent pink to encourage reflection on the fragility of trees and to inspire people to notice the landscape, rather than take it for granted. This Chionanthus retusus (Chinese fringe tree) was an older specimen that had been in decline and was ultimately lost earlier this summer. It is the fourth tree that Scott Arboretum & Gardens has transformed in this way, using striking color to draw the community’s attention to the ever-changing landscapes in a beautiful and meaningful way. The bold pink gives new “life” to the dead tree, honoring its presence and history while prompting reflection on impermanence and renewal.

Opening Doors for First in Family to Attend College

The Swarthmore Summer Scholars Program (S3P), which affirms the College’s commitment to providing resources and support to all students, recently earned an Inspiring Programs in STEM Award. Insight Into Academia bestowed the award in recognition of Swarthmore “demonstrating an outstanding commitment to inclusive excellence and belonging” in its science, technology, engineering, and math (STEM) fields.

“This award reflects the exceptional efforts that my predecessors, Professor Emerita Allison Dorsey and Professor Emerita Amy Vollmer, made to build the S3P foundation,” says Ben Geller ’01, associate professor of physics and director of the S3P program, “as well as the strides we’ve made over the past several years to expand faculty participation in S3P and provide year-round community support for students and mentors.”

Prize Writer

North Continent Ribbon book cover

Ursula Whitcher ’03 is on the shortlist for the 2025 Ursula K. Le Guin Prize for Fiction for her book North Continent Ribbon. The $25,000 Le Guin Prize is given annually to the author of a book that reflects the concepts and ideas that were central to Le Guin’s own work: hope, equity, and freedom; non-violence and alternatives to conflict; and a holistic view of humanity’s place in the natural world. “I grew up reading and re-reading Le Guin,” says Whitcher. “I’m always discovering new layers in her work. It’s a tremendous honor to be placed in this literary company.”

The recipient of the 2025 prize will be chosen by authors Matt Bell, Indra Das, Kelly Link, Sequoia Nagamatsu, and Rebecca Roanhorse. The winner will be announced Oct. 21, Le Guin’s birthday.

Rebecca Sharpless ’90 honored with Eugene M. Lang ’38, H’81 Impact Award

As a faculty member at the University of Miami School of Law, where she is the founding director of the Immigration Clinic and Associate Dean for Experiential Learning, Rebecca Sharpless ’90 is a leading force for good in immigration law.
Head shot of Rebecca Sharpless ’90
Laurence Kesterson

Rebecca Sharpless ’90

From 1996 to 2007, Sharpless was a supervising attorney at Florida Immigrant Advocacy Center, where she engaged in litigation on behalf of low-income immigrants as lead counsel in cases before the United States Courts of Appeals and United States District Courts as well as in immigration court and before the Board of Immigration Appeals. Of particular interest to the nominating committee was her 2024 book, Shackled: 92 Refugees Imprisoned on ICE Air, which examines U.S. immigration enforcement system through the stories of two men from Somalia who were on a botched deportation flight. The book has been honored as a Foreword Indies Finalist in two categories and as a Readers’ Choice Book Award Finalist. It also won a bronze Independent Publisher Book Award in the category of current events: political/economic/foreign affairs.

Sharpless graduated from Swarthmore with high honors with a degree in philosophy.

More award winners: bit.ly/SwatALUMNI

Head shot of Mark Dingfield ’01
Courtesy of the University of Pennsylvania
“It is a profound honor to take on this role at such a pivotal time for Penn,” says Mark Dingfield ’01, who majored in political science at Swarthmore.

New Post at Penn

Mark F. Dingfield ’01 has been named executive vice president of the University of Pennsylvania. He previously served as Penn’s vice president for finance and treasurer, where he led efforts to strengthen the university’s financial position and support forward-looking planning across Penn’s academic and clinical enterprises. He has built close partnerships with university and Penn Medicine leaders to ensure that operations are sustainable and aligned with Penn’s long-term vision.

Among his many contributions, Dingfield led the launch of the Quaker Commitment, an initiative that enhances Penn’s financial aid program by further supporting middle-income students and families. As executive vice president, Dingfield will oversee Penn’s business and administrative operations, including finance, investments, human resources, information technology, facilities and real estate services, audit, and public safety.

A First Step in Teaching

The North American Language and Culture Assistants Program (NALCAP) has awarded English Teaching Assistantship to India Gray ’15. “I am excited to hone my teaching skills in Spain and grateful for the opportunity to immerse myself in a new language and culture,” says Gray. “I hope to continue to teach languages in the future, and the NALCAP award is a wonderful first step in that direction.”
Red lounge chairs in a study space
Editing booth in Martin Hall
Back of Martin Hall, shot from outside
Martin Hall entrance, shot from outside
John Chen ’76 stands in the screening room that he donated

A New Chapter for Martin Hall

laurence kesterson
A NEW CHAPTER FOR MARTIN HALL: After a major transformation, Martin Hall opened this semester as a new hub for curiosity, creativity, and innovation at Swarthmore. Now home to Film & Media Studies, Computer Science, and the Creative Media Commons, the space is designed to spark collaboration across disciplines and bring new ideas to life, both in and beyond the classroom. The renovation, which began in April 2023, was designed to preserve and restore Martin’s historical front and side facades, and to replace the back wing of the building with an addition that offers views of the Crum Woods. A highlight of the reimagined Martin Hall is the 44-seat screening room — a gift from John P. Chen ’76, P’19 (above) and Emily Tang Chen P’19, in honor of John’s parents and their love of film.