Battles and capitals 

with Shuhei Kitamura, ISER, Osaka University

Replaces previous version titled Cities, conflict, and corridors

From June 2025

Traffic fatalities and population density 

From September 2023

Eurasian migration: a simulation 
Videos for simulation maps:

Eurasia as a whole

Europe and the Near East

India  and South East Asia

From May 2021

Geography, institutions, and growth: the United States as a microcosm 

From May 2005