Adaptation of domesticated maize and its wild relative teosinte has been facilitated by the geographically widespread exchange of beneficial alleles between them.

3D light-sheet imaging identifies the location and metabolic sensitivity of β-cell subpopulations that lead and coordinate islet Ca²⁺ oscillations.

Further evidence in support of a new amyloid-independent hypothesis for the pathogenesis of Alzheimer's disease is provided, with an expanded set of Alzheimer-causing mutations in the protease that produces amyloid.