Articles groups the long-form Learn More pieces this atlas plans to write for its own entities, drafted in pairs per subject once article authoring resumes. Belongs here: a pending or published article and the entity it discusses, covering an engineer's career, an invention's development or a material's history in more depth than the entity's own structured facts allow. Does not belong here: any subject-matter entity itself, such as an invention, an engineer or a material, which is filed under its own type instead.