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...

The concept of peace has been under discussion in peace research from its start over 50 years ago. This article reviews the debate on broader and narrower conceptions of peace and investigates empirical patterns in the first 49 volumes of Journal of Peace Research, with some comparisons with...