Biologists Find Evolution Favors Strategic Cooperation and Selfishness

Professor of Biology Joshua Plotkin and post-doc Alexander J. Stewart last year published a mathematical explanation of the evolution of cooperation and generosity in nature through the use of the Prisoner’s Dilemma in game theory.

In new findings, to be published in Proceedings of the National Academy of Science, Plotkin and Stewart found that when the Prisoner’s Dilemma is played in a large, evolving population with variations in available payoffs, selfish strategies can be more successful. The research presents a grimmer but more realistic view of how cooperation and selfishness operate in nature.

Read the full story here.

Arts & Sciences News

Mark Trodden named Dean of Penn’s School of Arts & Sciences

A distinguished physicist and accomplished academic leader, Trodden will assume the role on June 1.

View Article >
2025 School of Arts & Sciences Teaching Awards Announced

Penn Arts & Sciences annually recognizes faculty, lecturers, and graduate students for their exemplary teaching. This year’s honorees come from 10 departments and two programs.

View Article >
2025 College of Arts & Sciences Graduation Speakers

Michael Platt, James S. Riepe University Professor, will speak at this year’s College of Arts & Sciences graduation ceremony, along with student speaker Anthony Wong, C’25, Sunday, May 18, at 6:30 p.m. on Franklin Field.

View Article >
Three from Penn Arts & Sciences Elected 2024 AAAS Fellows

They include Marlyse Baptista, President’s Distinguished Professor of Linguistics; M. Susan Lindee is the Janice and Julian Bers Professor of History and Sociology of Science; and Christopher Murray, Richard Perry University Professor.

View Article >
Penn Arts & Sciences Receives $8 Million Commitment from The Robert K. Johnson Foundation

The gift will name and endow the Integrated Studies Program, which offers an immersive, interdisciplinary learning experience for Benjamin Franklin Scholars students pursuing degrees in the College of Arts and Sciences.

View Article >
Kimberly Bowes Named BFC Presidential Professor of Classical Studies

Bowes' research interests include Roman archaeology and economic history, with a particular focus on the lived experiences of the ancient poor.

View Article >