The 2024 Neutron Sciences calendar poster features some of the key scientific areas of research done at Oak Ridge National Laboratory’s Spallation Neutron Source (SNS) and the High Flux Isotope Reactor (HFIR), with applications ranging from safer, longer-lasting batteries to novel materials like plant-based plastics to catalysts for a cleaner environment to alloys for lighter, more durable structures. These world-class user facilities attract scientists from around the globe to do research that helps answer big science questions about the fundamental nature of materials at the atomic scale and results in innovations that improve our daily lives.