Catherine Duggan presenting at SIOE 2015.

SIOE 2019 conference.

SIOE 2019 conference.

Duncan Watts at SIOE 2017.

SIOE conference moments.

Daniel Berkowitz at SIOE 2017.

Janet Landa and Barak Richman at SIOE 2017.

Giorgio Zanarone celebrating 11 years as SIOE Secretary.

The audience attending a session.

Friends and colleagues at the 2009 conference.