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Show HN: DuckDB community extension for prefiltered HNSW using ACORN-1

Hey folks! As someone doing hybrid search daily and wishing I could have a pgvector-like experience but with actual prefiltered approximate nearest neighbours, I decided to just take a punt on implementing ACORN on a fork of the DuckDB VSS extension.

Tech

Oil at $150 will trigger global recession, says boss of financial BlackRock

Article URL: https://www.bbc.com/news/articles/c9wqrdkx8ppo Comments URL: https://news.ycombinator.com/item?id=47512204 Points: 48 # Comments: 20

Tech

Amazon just bought a startup making kid-size humanoid robots

The acquisition of Fauna Robotics is the second robotics startup Amazon has purchased this month.

Tech

With $3.5B in fresh capital, Kleiner Perkins is going all in on AI

The fundraise includes $1 billion for investing in early-stage startups, and $2.5 billion for late-stage growth businesses.

Tech

In Edison’s Revenge, Data Centers Are Transitioning From AC to DC

Article URL: https://spectrum.ieee.org/data-center-dc Comments URL: https://news.ycombinator.com/item?id=47511703 Points: 50 # Comments: 35

Tech

Zero-Cost POSIX Compliance: Encoding the Socket State Machine in Lean's Types

Article URL: https://ngrislain.github.io/blog/2026-3-25-zerocost-posix-compliance-encoding-the-socket-state-machine-in-lean-4s-type-system/ Comments URL: https://news.ycombinator.com/item?id=47511631 Points: 13 # Comments: 2

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Flighty Airports

Article URL: https://flighty.com/airports Comments URL: https://news.ycombinator.com/item?id=47511589 Points: 72 # Comments: 18

Tech

Goodbye to Sora

https://xcancel.com/soraofficialapp/status/20365327959847158... https://www.hollywoodreporter.com/business/digital/openai-sh... , https://archive.ph/ABkeI Comments URL: https://news.ycombinator.com/item?id=47508246 Points: 389 # Comments: 302

Tech

New Mexico just handed Meta its first courtroom defeat over child safety, and the rest of the country is watching

The dollar amount isn’t as important as the fact that this is the first jury verdict of its kind against Meta over harm to young people.

Tech

Lululemon bets Epoch Biodesign can eat its shorts, literally

Startup Epoch Biodesign uses enzymes to break plastic waste down into monomers, the chemical building blocks that can be used to make new plastic.

Tech

OpenAI’s Sora was the creepiest app on your phone — now it’s shutting down

Though the underlying Sora 2 video- and audio-generation model is scarily impressive, there was not sustained interest in an AI-only social feed.

Tech

Accel, Prosus pick six ‘off-the-map’ startups for inaugural India cohort

The six startups were selected from over 2,000 applications and will receive $500,000 to $2 million each.

Tech

Kentucky woman rejects $26M offer to turn her farm into a data center

A "major artificial intelligence company" reportedly offered a Kentucky family $26 million to build a data center on their farm.

Tech

Final analysis of 2025 Iberian blackout: Policies left Spain at risk

Too much hardware was allowed to disconnect right at the edge of normal conditions.

Tech

Newly purchased Vizio TVs now require Walmart accounts to use smart features

Walmart wants to connect what people stream "directly with retail interaction."