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Show HN: Claude-replay – A video-like player for Claude Code sessions

I got tired of sharing AI demos with terminal screenshots or screen recordings. Claude Code already stores full session transcripts locally as JSONL files. Those logs contain everything: prompts, tool calls, thinking blocks, and timestamps. I built a

Tech

Entomologists use a particle accelerator to image ants at scale

Article URL: https://spectrum.ieee.org/3d-scanning-particle-accelerator-antscan Comments URL: https://news.ycombinator.com/item?id=47276539 Points: 22 # Comments: 0

Tech

Paul Brainerd, Founder of Aldus PageMaker, has died

Article URL: https://blog.adafruit.com/2026/03/04/pagemaker-and-aldus-founder-pioneer-paul-brainerd-1947-2026/ Comments URL: https://news.ycombinator.com/item?id=47276220 Points: 37 # Comments: 5

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Good Bad ISPs

Article URL: https://community.torproject.org/relay/community-resources/good-bad-isps/ Comments URL: https://news.ycombinator.com/item?id=47275230 Points: 39 # Comments: 8

Tech

Global warming has accelerated significantly

Article URL: https://www.researchgate.net/publication/389855619_Global_Warming_has_Accelerated_Significantly Comments URL: https://news.ycombinator.com/item?id=47275088 Points: 657 # Comments: 638

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US economy unexpectedly sheds 92k jobs in February

Article URL: https://www.bbc.com/news/articles/cjd98091g28o Comments URL: https://news.ycombinator.com/item?id=47275035 Points: 420 # Comments: 528

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Workers who love ‘synergizing paradigms’ might be bad at their jobs

Article URL: https://news.cornell.edu/stories/2026/03/workers-who-love-synergizing-paradigms-might-be-bad-their-jobs Comments URL: https://news.ycombinator.com/item?id=47274676 Points: 367 # Comments: 204

Tech

It took four years until 2011’s iOS 5 gave everyone an emoji keyboard

Article URL: https://unsung.aresluna.org/im-obviously-taking-a-risk-here-by-advertising-emoji-directly/ Comments URL: https://news.ycombinator.com/item?id=47272338 Points: 93 # Comments: 52

Tech

TriZetto confirms 3.4M people’s health and personal data was stolen during breach

Health tech giant TriZetto has confirmed that more than 3.4 million people had personal and health information stolen in a 2024 cyberattack, which the company failed to detect for almost a year.

Tech

With Gateway likely gone, where will lunar landers rendezvous with Orion?

"We will challenge every requirement, clear every obstacle, delete every blocker."

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Why are vertebrate eyes so different from those of other animals?

A new hypothesis proposes that our ancestors lost their eyes, then rebuilt them.

Tech

Show HN: Moongate – Ultima Online server emulator in .NET 10 with Lua scripting

I've been building a modern Ultima Online server emulator from scratch. It's not feature-complete (no combat, no skills yet), but the foundation is solid and I wanted to share it early. What it does today: - Full packet layer for the classic UO clien

Tech

I Dropped Our Production Database and Now Pay 10% More for AWS

Article URL: https://alexeyondata.substack.com/p/how-i-dropped-our-production-database Comments URL: https://news.ycombinator.com/item?id=47275157 Points: 28 # Comments: 24

Tech

CT Scans of Health Wearables

Article URL: https://www.lumafield.com/scan-of-the-month/health-wearables Comments URL: https://news.ycombinator.com/item?id=47275152 Points: 44 # Comments: 4

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Show HN: Interactive 3D globe of EU shipping emissions

Article URL: https://seafloor.pages.dev Comments URL: https://news.ycombinator.com/item?id=47275121 Points: 7 # Comments: 2