Hacker News Highlights

9.20.25 | Trump's $100k H-1B visa fee, Ants lay eggs hatching into another species, Obsidian minimizes supply chain attack risks


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This is a recap of the top 10 posts on Hacker News on Sep 20, 2025.

Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

  • (00:00) - Intro
  • (00:22) - Trump to impose $100k fee for H-1B worker visas, White House says
  • (01:42) - Ants that seem to defy biology – They lay eggs that hatch into another species
  • (03:06) - Less is safer: How Obsidian reduces the risk of supply chain attacks
  • (04:17) - The best YouTube downloaders, and how Google silenced the press
  • (05:34) - Internet Archive's big battle with music publishers ends in settlement
  • (06:52) - Show the Physics
  • (08:07) - Show HN: WeUseElixir - Elixir project directory
  • (09:14) - Kernel: Introduce Multikernel Architecture Support
  • (10:28) - If all the world were a monorepo
  • (11:38) - Feedmaker: URL + CSS selectors = RSS feed
  • (12:46) - Outro

  • Trump to impose $100k fee for H-1B worker visas, White House says
    https://www.reuters.com/business/media-telecom/trump-mulls-adding-new-100000-fee-h-1b-visas-bloomberg-news-reports-2025-09-19/
    https://news.ycombinator.com/item?id=45305845

    Ants that seem to defy biology – They lay eggs that hatch into another species
    https://www.smithsonianmag.com/smart-news/these-ant-queens-seem-to-defy-biology-they-lay-eggs-that-hatch-into-another-species-180987292/
    https://news.ycombinator.com/item?id=45300865

    Less is safer: How Obsidian reduces the risk of supply chain attacks
    https://obsidian.md/blog/less-is-safer/
    https://news.ycombinator.com/item?id=45307242

    The best YouTube downloaders, and how Google silenced the press
    https://windowsread.me/p/best-youtube-downloaders
    https://news.ycombinator.com/item?id=45300810

    Internet Archive's big battle with music publishers ends in settlement
    https://arstechnica.com/tech-policy/2025/09/internet-archives-big-battle-with-music-publishers-ends-in-settlement/
    https://news.ycombinator.com/item?id=45255785

    Show the Physics
    https://interactivetextbooks.tudelft.nl/showthephysics/Introduction/About.html
    https://news.ycombinator.com/item?id=45265760

    Show HN: WeUseElixir - Elixir project directory
    https://weuseelixir.com/
    https://news.ycombinator.com/item?id=45306120

    Kernel: Introduce Multikernel Architecture Support
    https://lwn.net/ml/all/[email protected]/
    https://news.ycombinator.com/item?id=45302721

    If all the world were a monorepo
    https://jtibs.substack.com/p/if-all-the-world-were-a-monorepo
    https://news.ycombinator.com/item?id=45259623

    Feedmaker: URL + CSS selectors = RSS feed
    https://feedmaker.fly.dev
    https://news.ycombinator.com/item?id=45306701

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