Top stories for one week

VC-backed unicorns are losing their horns

Perfect Squares and Pythagorean Triples on the Ulam Spiral

We allowed remote code execution (but safely)

Sovereign Code from the Heart of Suffering: Injecting Logic into AI

Resurrected nitrogenases recapitulate N-isotope biosignatures over 2B years

Where will China get its compute in 2026?

Show HN: Superposition, open source access to Claude Code or Codex from anywhere

Show HN: ARA-Engine – Modeling the Alberta power grid transition in Python

Show HN: An MCP server that gives AI assistants a live Mermaid diagram canvas

OpenAI GPT-5.3-Codex-Spark Now Running at 1K Tokens per Second on Cerebras Chips

Mars and Life

Oracle vs. PostgreSQL – Row level and Column level security

Japan's National Chip Startup Races to 2nm Mass Production

Show HN: Moatifi – Free Buffett-style moat analysis for stocks

Strawmen and Worldview Solipsism