/r/ThatsInsane: ThatsInsane - For things that are a little bit more wild, crazy, scary, terrifying and incredible than the average. And for stuff that is generally insane! - July 8, 2020 - 13:00
/r/interesThing: interesThing - For almost any(thing) you find interest(h)ing - July 8, 2020 - 10:16
/r/sciences: r/Sciences - Science on Reddit - A community for people who like science - May 1, 2020 - 12:58