Top news for December 21, 2008

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The Smoot – How an MIT prank became a lasting unit of measurement

Meta refuses to sign EU’s AI code of practice

Show HN: OverType – A Markdown WYSIWYG editor that's just a textarea

The best foldable phones for 2025

The best noise-canceling headphones for 2025

The best live TV streaming services to cut cable in 2025

Daniel Kleppner, Physicist Who Brought Precision to GPS, Dies at 92

China Is Spending Billions to Become an A.I. Superpower

Slack is getting a host of new AI tools

Fujitsu sorry for Post Office horror – but still cashing big UK govt checks