Santa Fe
Institute
  • Research
    • Themes
    • Projects
    • SFI Press
    • Researchers
    • Publications
    • Library
    • Sponsored Research
    • Fellowships
    • Miller Scholarships
  • News + Events
    • News
    • Newsletters
    • Podcasts
    • SFI in the Media
    • Media Center
    • Events
    • Community
    • Journalism Fellowship
  • Education
    • Programs
    • Projects
    • Alumni
    • Complexity Explorer
    • Education FAQ
    • Postdoctoral Research
    • Education Supporters
  • People
    • Researchers
    • Fractal Faculty
    • Staff
    • Miller Scholars
    • Trustees
    • Governance
    • Resident Artists
    • Research Supporters
  • Applied Complexity
    • Office
    • Applied Projects
    • ACtioN
    • Applied Fellows
    • Studios
    • Applied Events
    • Login
  • Give
    • Give Now
    • Ways to Give
    • Contact
  • About
    • About SFI
    • Engage
    • Complex Systems
    • FAQ
    • Campuses
    • Jobs
    • Contact
    • Library
    • Employee Portal

Science for a Complex World

Events

Here's what's happening

Give

You make SFI possible

Subscribe

Sign up for research news

Connect

Follow us on social media

© 2026 Santa Fe Institute. All rights reserved. This site is supported by the Miller Omega Program.

Home / Research / Initiatives

The Social Reactors Project

Photo by Anders Jilden
Overview

This SFI-inspired project now centered at CU Boulder seeks the common properties of human settlements through history and across cultures.

We derive our view of human settlements from the Institute’s urban scaling research, which likens cities to stars: they attract people and accelerate interaction and social outputs, much the way stars attract matter and burn more brightly as they grow larger and denser. These social dynamics are a function of networks—interconnected systems of people and infrastructure arrayed in space.

With the discovery that modern cities display many of the emergent properties pre-modern cities and rural settlements do, the Colorado University of Colorado Boulder-centered project seeks to characterize and generalize urban life by developing a framework driven by contemporary, historical, and archeological data and informed by the tools and methods of complexity science.

Share
  • Sign Up For SFI News
  • Resources
  • The Social Reactors Project at CU Boulder


SFI News

View All SFI News

Implicit biases are harder to change in big cities than in small cities

New study examines publication trends at top journals

Coordinating international operations with “Space Diplomacy”

Multiroute Pathogen Transmission is Different

Allison Stanger named a 2026–27 Berlin Prize Fellow

In Memoriam: Peter Schuster

Cooperation both protects and weakens societies

Kaleda Denton selected as a “Rising Star in Computational and Data Sciences”

Andreas Wagner awarded ERC Advanced Grant

SFI Professors Give Judges Advice on AI

John Krakauer named director of Champalimaud's Centre for Restorative Neurotechnology

In Memoriam: Jim Rutt

Does intelligence ‘emerge’ in large language models?

Your dominant hand is made, not born

A bird song almost too quiet to hear

Model redefining conformity excels against real-world data

Decoding animal minds

SFI External Professor Nicholas de Monchaux named Dean of UC Berkeley College of Environmental Design

Brian Enquist receives Robert H. MacArthur Award

Han van der Maas named director of Amsterdam’s Institute for Advanced Study