Cover of Neuron

February 08, 2018

On the cover: The photograph by David Oliete captures the more than two-century-old tradition of building human towers in Catalonia (Castells de Catalunya) and evokes the remarkable ability of biological systems to self-assemble into complex structures. In this issue, Enriquez et al. (pages 538–554) describe a small number of Drosophila neural stem cells that give rise to both leg motor neurons and neuropil glia that assemble into the adult thoracic neuropil that controls leg movements and locomotion, including the ability to build towers.