We have a monthly rationalist meetup in São Paulo, any reader of SlateStarCodex is very welcome to join us! We usually have presentations and discussions on rationalist themes. You can join us at the Racionalidade-LW-SP mailing list, Meetup.com group, or FB group.
This event is part of the SlateStarCodex Meetups Everywhere 2018. This is a great opportunity to meet other rationalists and SSC readers in person. Everyone is welcome to come!