Hacker News on 26 December 2020

• Photocatalyst splits water into H and O2 at quantum efficiency near 100%
• Fun with IP address parsing
• 1937 film explains how a car differential works
• Print this file, your printer will jam (2008)
• What If You Could Do It All Over?
• Talking out loud to yourself is a technology for thinking
• I reverse engineered Google Docs to play back any document's keystrokes (2014)
• Archaeologists uncover ancient street food shop in Pompeii
• Starship / Super Heavy
• Ask HN: What startup/technology is on your 'to watch' list?