Cover legend: After fibroblast growth factor receptor signaling is knocked down in radial glia that express green fluorescent protein (GFP) in developing mouse cerebral cortex, neurogenesis is accelerated and GFP-expressing neuronal daughter cells (green) begin expressing Tbr1, a neuronal marker (red). Cell nuclei are labeled with DAPI (blue). For more information, see the article by Rash et al. in this issue (pages 15604).