Hacker News on 6 June 2021

• Hundreds of fishing vessels vanishing along Argentina’s waters
• A New Future for Icanhazip
• An incomplete list of skills senior engineers need, beyond coding
• In Praise of Open Source Textbooks
• Scientists develop ‘cheap and easy’ method to extract lithium from seawater
• The SaaS CTO Security Checklist Redux
• Once a bastion of free speech, the ACLU faces an identity crisis
• Publish and Perish
• Apple’s tightly controlled App Store is teeming with scams
• Photographer captures 'odd but exciting' crow behaviour known as anting