Hacker News on 9 March 2019

• Gotify – a self-hosted push-notifications service
• “No, we’re telling everyone we are using Java”
• ArchiveBox: Open-source self-hosted web archive
• An “acoustic metamaterial” that can cancel 94 percent of sound
• What Happens Now That China Won't Take U.S. Recycling
• Show HN: My CV is also a bootloader
• Run full Linux distros or specific applications on top of Android
• Speedrunning Windows 95
• Model Explainability is The Next Data Science Superpower
• US citizens will need a visa to visit Europe starting in 2021