David Christian is a historian who has helped found the field of Big History. He has written multiple books on the subject, including my favorite, Origin Story. With Bill Gates, he is co-founder of the Big History Project, which has built free on-line high-school courses in big history.
https://www.bighistoryproject.com/
https://bighistory.org/
https://rhyslindmark.substack.com/
https://patreon.com/rhyslindmark
