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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 sayshttps://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=45305845Ants that seem to defy biology – They lay eggs that hatch into another specieshttps://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=45300865Less is safer: How Obsidian reduces the risk of supply chain attackshttps://obsidian.md/blog/less-is-safer/https://news.ycombinator.com/item?id=45307242The best YouTube downloaders, and how Google silenced the presshttps://windowsread.me/p/best-youtube-downloadershttps://news.ycombinator.com/item?id=45300810Internet Archive's big battle with music publishers ends in settlementhttps://arstechnica.com/tech-policy/2025/09/internet-archives-big-battle-with-music-publishers-ends-in-settlement/https://news.ycombinator.com/item?id=45255785Show the Physicshttps://interactivetextbooks.tudelft.nl/showthephysics/Introduction/About.htmlhttps://news.ycombinator.com/item?id=45265760Show HN: WeUseElixir - Elixir project directoryhttps://weuseelixir.com/https://news.ycombinator.com/item?id=45306120Kernel: Introduce Multikernel Architecture Supporthttps://lwn.net/ml/all/20250918222607.186488-1-xiyou.wangcong@gmail.com/https://news.ycombinator.com/item?id=45302721If all the world were a monorepohttps://jtibs.substack.com/p/if-all-the-world-were-a-monorepohttps://news.ycombinator.com/item?id=45259623Feedmaker: URL + CSS selectors = RSS feedhttps://feedmaker.fly.devhttps://news.ycombinator.com/item?id=45306701 What is Hacker News Highlights? Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.