A recent Climatic Change review article reports a remarkable convergence of scientific evidence for a link between climatic events and violent intergroup conflict, thus departing markedly from other contemporary assessments of the empirical literature. This commentary revisits the review in...

Rapid urbanization is transforming the developing world, but the political consequences of this transformation are not well understood. In this paper, we argue that political contention and mobilization in the urban environment differs from other forms of political activity in its scale, speed,...

The world is generally becoming less violent, but the debate on climate change raises the specter of a new source of instability and conflict. In this field, the policy debate is running well ahead of its academic foundation—and sometimes even contrary to the best evidence. Although...

While climate change scenarios for the Sahel vary and are uncertain, the most popularized prediction says there will progressively be drier conditions with more erratic rainfall. According to some, an increase in violent conflicts over scarce resources should also be expected. This article...

Income varies considerably within countries and the locations where conflicts emerge are rarely typical or representative for states at large. Yet, most research on conflict has only examined national income averages and neglected spatial variation. The authors argue that civil conflicts are...