Hacker News on 27 June 2021

• Mumble: Open-Source, Low Latency, High Quality Voice Chat
• Challenges in the diagnosis of magnesium status
• Windows 11, Amazon, and Uncomfortable Questions
• Let's code a TCP/IP stack (2016)
• Ask HN: Good books/courses to learn networking essentials for web developers?
• The Unison Programming Language
• Cuba′s Covid vaccine rivals Pfizer, Moderna
• Near, the emulator developer of bsnes, higan, and more, has died
• Binance banned from doing business in UK
• Windows 11 will create heaps of needless trash