Aviator (YC S21) is hiring engineers to build open source stacked PRs CLI

Show HN: A CLI tool I made to self-host any app with two commands on a VPS

Hollow concrete mimics human bones for 5x better toughness | Engineers have developed a new kind of concrete that promises more than 5 times the damage resistance of the usual stuff, by poking holes in its structure.

Meta AI: "The Future of AI Is Open Source and Decentralized"