The document discusses the Elsevier Executable Papers Challenge which aims to develop models for publishing computational science papers that are executable. It provides an overview of several finalist submissions that developed platforms and environments for creating executable papers, including SHARE which hosts virtual machines for paper submissions and A-R-E which supports the full paper lifecycle from authoring to publication. The document advocates for the idea of executable journals where submitted papers include working code that can be executed on a shared platform and remain available for other papers to build upon, clearly communicating methods and reducing duplication of work.