Hacker News on 26 July 2019

• Decades-Old Computer Science Conjecture Solved in Two Pages
• How is China able to provide enough food to feed over 1B people?
• Mozilla debuts implementation of WebThings Gateway open-source router firmware
• The UK authorities made illegal copies of the Schengen Information System
• Users hate change
• Firefox Reality
• IRS sends warning letters to more than 10k cryptocurrency holders
• What Stress Does to the Brain
• Senescent cells stop producing nucleotides: new research
• Japan approves first human-animal embryo experiments