Start Forging New Worlds: https://www.worldanvil.com/isaac-arthur The new Grabby Aliens model proposes that the Universe may already contain several thousand immense alien empires... and that we may soon be one of them. See the Grabby Aliens Paper & Presentations: https://grabbyaliens.com ...

Sign up for a Curiosity Stream subscription and also get a free Nebula subscription (the streaming platform built by creators) here: https://curiositystream.com/isaacarthur The great mystery of where all the aliens are in our vast Universe contemplates ancient interstellar civilizations ...