News + Events

Citizen opposition to COVID-19 vaccination has emerged across the globe, prompting pushes for mandatory vaccination policies.  But a new study based on evidence from Germany and on a model of the dynamic nature of people’s resistance to COVID-19 vaccination sounds an alarm: mandating vaccination could have a substantial negative impact on voluntary compliance.

A new study by ecologist and SFI External Professor André de Roos* shows that differences between juveniles and adults of the same species are crucial for the stability of complex ecological communities.

New research published in Nature provides a powerful yet surprisingly simple way to determine the number of visitors to any location in a city. 

In groundbreaking work, a team led by SFI Professor Chris Kempes has developed a new ecological biosignature that could help scientists detect life in vastly different environments. Their work appears as part of a special issue of the Bulletin of Mathematical Biology collected in honor of renowned mathematical biologist James D. Murray.

COVID-19 hit the world’s cities especially hard, and some of the worst suffering occurred in economically depressed neighborhoods. In Santiago, Chile, for example, low-income people were more likely to contract and die from the disease than residents in other parts of the capital city, according to new research published in the journal Science. 

The rapid spread of the coronavirus around the world is a grim reminder of the importance of inter-governmental cooperation — and the consequences of trying to go it alone. A new paper published in PNAS and co-authored by SFI external professor Matthew Jackson found that infection rates from diseases like COVID-19 can be decreased if nations, states, and cities develop proactive policies that allow them to act fast to contain a crisis.

In a commentary this week in the Proceedings of the National Academy of the Sciences, SFI colleagues Simon DeDeo and Elizabeth Hobson* discuss the science of social hierarchy — what rank is, what it does, and where it comes from.

Almost 900 confirmed participants joined “WOST II” — the second annual workshop that focuses on stochastic thermodynamics and its application to many issues involving complex systems. 

In an analysis published in the journal PLOS One, alumni of the iconic Complex Systems Summer School took a close look at collaboration among a total of 823 participants who attended summer schools from 2005 to 2019.

The human world is, increasingly, an urban one — and that means elevators. Two physicists saw this as an opportunity to explore the factors that determine elevator transport capabilities in their new paper in the Journal of Statistical Mechanics.

Employing ecological tools such as food web modeling can help archaeologists create a fuller picture of the ways people interacted with their environment in the distant past.

By simulating the physiology and decisions of early way-finders, an international team of archaeologists, geographers, ecologists, and computer scientists has mapped the probable “superhighways” that led to the first peopling of the Australian continent some 50,000-70,000 years ago.

Newly published findings from a 2018 SFI working group show that Pueblo farmers often persevered through droughts, but when social tensions were increasing, even modest droughts could spell the end of an era of development. 

In a paper published in Science Advances, University of Michigan and Santa Fe Institute researchers report a novel belief propagation algorithm for the solution of probabilistic models on networks containing short loops.

An SFI-authored paper on “Nonlinear Information Bottleneck” is one of four papers to win the 2021 Entropy Best Paper Awards. 

Underneath the apparent messiness of forests lurk extraordinary regularities, governed by the biological mechanisms that drive universal forces of growth, death, and competition.

Data extracted from the oldest surviving document recording Korean history shows a strong correlation between extreme weather events and war.

At SFI’s Applied Complexity roundtable in March, SFI External Professor and MIT economist Andrew Lo spoke about “market adaptation” and applied a complex ecological and evolutionary lens to the market’s behavior under COVID.

In a new editorial at The Conversation, SFI External Professor Jessika Trancik argues that climate disaster can be averted most efficiently if governments pave the way for technological innovation.

A mathematical model, validated on a large dataset of U.S. political surveys, predicts that when two groups form, both want to exclude those in the middle.