https://www.reddit.com/r/askscience https://www.reddit.com/r/askscience might interest you. "The panel is an informal group of redditors who are either profess

https://www.reddit.com/r/askscience https://www.reddit.com/r/askscience might interest you. "The panel is an informal group of redditors who are either professional scientists or those in training to become so. All panelists have at least a graduate-level familiarity within their declared field of expertise and answer questions from related areas of study. A panelist's expertise is summarized in a color-coded AskScience flair." https://www.reddit.com/r/askhistorians https://www.reddit.com/r/askhistorians are also fairly good at citing. Both communities are self-accountable to an extent - If a poster makes a mistake or controversial comment, the other qualified members of the community are likely to correct them or provide a rebuttal.