r/AskHistorians

For asking casual questions about historical events prior to 01/01/2001. Also see r/History or r/AskHistorians.

r/history is a place for discussions about history. Feel free to submit interesting articles, tell us about this cool book you just read, or start a discussion about who everyone's favorite figure of minor French nobility is! This is a somewhat more serious subreddit compared to many others. Make sure to familiarize yourself with our rules and guidelines before participating. All posts must be manually approved by a moderator. Thanks!

Reference questions answered here. Get the answers you are looking for! Please make sure to look over the community rules before posting.

This is a place to ask specific, closed-ended, non divisive questions.

Ask a science question, get a science answer.

For physicists and physics students. See the rules before posting, and the subreddit wiki for common questions. Basic homework questions are not allowed.

A central repository for questions about economic theory, research, and policy. Please read the rules before posting, as we remove all comments which break the rules. Answers must be in-depth and comprehensive, or they will be removed. Posts should be in the form of a question.

This subreddit is for questions of a mathematical nature. Please read the subreddit rules below before posting.

Welcome to HistoryWhatIf! We're here to explore alternate history scenarios in interesting ways.

This community is a place to share and discuss new scientific research. Read about the latest advances in astronomy, biology, medicine, physics, social science, and more. Find and submit new publications and popular science coverage of current research.

This subreddit is for discussing academic life, and for asking questions directed towards people involved in academia, (both science and humanities).