Jack Goldstone argues that Comparative Historical Analysis (CHA) holds a distinct epistemological orientation vis-a-vis large-N , frequentist approaches that has proven to be particularly fertile for the study of revolutions. He begins by sketching this CHA epistemology, focusing on its use of Bayesian analysis, process tracing, and congruence testing. Goldstone then proceeds to show, via a his...

The mechanism of egg-chamber elongation during Drosophila oogenesis has always been mysterious. A new study shows that the egg chambers spin around their long axis laying down polarised extracellular matrix, which acts as a molecular corset to restrict radial expansion.

In Lucan Way’s insightful, highly structural account of the color revolutions, they had to happen.1 Each was separately determined by the weakness of the authoritarian regimes. As Way puts it, “regime collapses have resulted more from authoritarian weakness than opposition strength” (62). For Way, it is even misleading to conceptualize these events as revolutions; they were authoritarian turnov...

Miss Ikin writes from the fulness of her own experience. After years of activity during the War in which she travelled up and down the country lecturing to the Forces on personal problems, both spiritual and domestic, she now finds herself extremely limited in physical ability and unable to walk more than a short distance. Consequently she knows what she is talking about, and she gives many pra...