Contribute
Help us get it right
Big History is written in the open. Every lesson is a plain text file, and every change is recorded.
Report an error
Found a claim that is wrong, outdated or unsourced? Open an issue in the source repository with the lesson name and the claim. Corrections are made in public, with the date and what changed.
Review a lesson
If you teach or research in one of the eleven disciplines the journey draws on, you can review lessons before they are published. A review means reading the claim list, checking each source, and telling us what is missing or overstated. Reviewers are credited on the lessons they check.
Write a lesson
Lessons that are marked planned have a title and a summary but no text yet. If one of them is your subject, propose an outline. Every lesson follows the same template: a scale card, the misconception it dismantles, an article in three depths, key terms, three check questions, a claim list with confidence labels, and sources.
The template and the writing guide are in the repository README.