News + Events

Sahana Subramanyam was a participant in SFI's 2018 summer Research Experience for Undergraduates — now called the Undergraduate Complexity Research program. In this essay, she reflects on how the experience shaped the research questions she is now pursuing as a Ph.D. candidate at Sanford University. 

Artificial-intelligence systems have made remarkable progress in recent years, but they still struggle with the kind of flexible, relational reasoning that comes naturally to humans. Program Postdoctoral Fellow Shuhao Fu studies how to bridge that gap.

In the 1980s and ’90s, SFI played laboratory to a promising new method known as agent-based modeling. In ensuing decades, agent-based models (ABMs) proliferated across many fields, including economics, but were largely sidelined in the wider field. A recent month-long working group met at SFI to supercharge wider use of ABMs in economics.

Complexity Postdoctoral Fellow Maike Morrison builds mathematical tools to quantify and compare biological variation. Her work draws on ecology, population genetics, and information theory to study the structure, diversity, and stability of populations — whether those populations consist of species in an ecosystem, microbes in the gut, ancestry fractions in humans, or even assets in a financial portfolio.

SFI Resident Professor Melanie Mitchell has received a 2025 Eric and Wendy Schmidt Award for Excellence in Science Communications from the National Academies of Sciences, Engineering, and Medicine. The award celebrates researchers, institutional writers, and journalists producing high-quality public-facing work.

Why do people make short-term decisions that may not be in their long-term interest? An October 20–22 working group met to take stock of a new body of evidence from experiments and observations to explore decision-making in complex environments, with a specific goal of building theories that can integrate and model context generally.

The 2025 Postdocs in Complexity Global Conference, held September 15-18, drew 53 accomplished scholars for a four-day meeting focused on collaboration, networking, and idea-generation, and to deepen established research projects.

Global markets are complex systems, shaped by feedback loops, sudden shocks, and adaptive behavior that rarely follow textbook rules and which can’t be captured by neat equations.

That reality is at the center of a special issue on complexity economics published in the Journal of Economic Behavior & Organization earlier this year. SFI’s Jenna Bednar, J. Doyne Farmer, and Penny Mealy edited the issue with R. Maria del Rio-Chanona, Jagoda Kaszowska-Mojsa, François Lafond, Marco Pangallo, and Anton Pichler.

Complexity science can help archaeologists understand how the everyday actions of ancient people led to the large-scale patterns we excavate today. In her new book, Thinking Through Archaeological Complexity, Santa Fe Institute External Professor Stefani Crabtree shows how methods drawn from complex systems, such as agent-based modeling and network analysis, can reveal hidden details of the very human stories that ultimately led to the artifacts, buildings, and food remains unearthed in the present day.

In a new paper in Science Advances, SFI External Professor Marcus Hamilton and colleagues present a new model showing the trade-offs between the cost and utility of new tools in small-scale societies.

SFI's Lou Schuyler Seed Grant Fund supports SFI’s early-career fellows' new, exploratory research directions. Since 2022, ten SFI postdocs have held these grants. Here, we celebrate the work of a few current and recent grant holders, who are putting these funds to uses as varied as they are inventive.

The human brain is remarkably good at detecting patterns in the world around us. We notice behaviors, rhythms, and recurrences, and often build analogies to explain them. But not all of these intuitive ideas about nature hold up under mathematical scrutiny. Visiting Complexity Postdoctoral Fellow Jacob Calvert is interested in which of those ideas can be made precise.

A paper published in PNAS in May describes work by External Professor Juan Pérez-Mercader and colleagues to create biochemistry-free self-assembling and reproducing synthetic cells.

In August, the American Institute of Physics and AIP Foundation honored SFI External Professor France Córdova with an evening celebration in downtown Santa Fe.

SFI External Professor Jessika Trancik, a former SFI Omidyar Fellow and current professor at MIT, was named the director of MIT’s Sociotechnical Systems Research Center (SSRC) this summer. 

In a paper in Nature, SFI External Professor Luís Bettencourt and co-author Nicholas Marchio, both researchers at the University of Chicago, use the first complete dataset of more than 415 million buildings across 50 countries in sub‐Saharan Africa to create an unprecedented approach to urban development, down to each street block.

Since the 1970s, the cost of solar-energy systems has plummeted by over 99 percent. In a recent paper published in PLOS One, SFI External Professor Jessika Trancik (MIT) and colleagues identify the innovations in various photovoltaic (PV) components that led to this spectacular decline.

In a recent op-ed in PNAS, SFI External Professor Michael Hochberg and co-author Paul Rainey explore whether deepening interdependence between humans and AI could lead to a new form of evolutionary individuality.

The New New Science, a September 15-18 working group, meets to address what it means to view the humanities as subjects described by — and understood through — mathematical and computational concepts.

On August 12-13 a working group at SFI explored the challenges and opportunities of digital-twin technology — virtual representations of physical objects, designed to exactly mimic its inspiration — not as simple models, but as complex systems that use real-time data to change in all the same ways as its real-world counterpart.