News YC
Y Combinator's accelerator has launched many of the best-known names in tech, and its ecosystem generates constant news. This section gathers stories about YC batches, alumni startups, founder announcements, and trends emerging from the accelerator community.
Coverage typically includes demo day roundups, funding announcements from companies with YC roots, shifts in what kinds of startups the accelerator is admitting, and commentary from its partners on where they see opportunity. Alumni acquisitions and milestone moments round out the mix.
Because thousands of ambitious founders pass through the program, the themes in each batch offer an early read on where startup energy is concentrating. Investors, aspiring founders, and industry watchers follow this ecosystem as a leading indicator for the wider market.

Sawe becomes first athlete to run a sub-two-hour marathon in a competitive race
2026-04-26Sabastian Sawe made history at the London Marathon by becoming the first athlete to complete the race in under two hours during a competitive event. This groundbreaking achievement sets a new benchmark for official marathon records and pushes the boundaries of human endurance in long-distance running.
Tell HN: An app is silently installing itself on my iPhone every day
2026-04-26iPhone users are reporting a frustrating iOS bug where the Headspace meditation app silently installs itself on their devices daily. The tech community suspects the issue is an Apple system error, speculating that a test artifact may have accidentally bled into production to trigger the mysterious reinstallations.

Fast16: High-precision software sabotage 5 years before Stuxnet
2026-04-26A newly identified cyber sabotage framework called Fast16 was patching high-precision calculation software in memory to silently corrupt computational results. Operating as early as 2005, this sophisticated digital attack predates the widely known Stuxnet worm by five years. The discovery highlights the early evolution of stealthy, targeted industrial software sabotage.
Quirks of Human Anatomy
2026-04-26A reader discussion exploring the quirks of human anatomy debates the misunderstood protective functions of organs like the prostate and tonsils while emphasizing the need for scientific humility when evaluating our biology. The conversation highlights that traits like male nipples simply result from shared developmental blueprints, demonstrating that apparent bodily quirks often serve hidden purposes or represent low-cost evolutionary trade-offs.

Asahi Linux Progress Linux 7.0
2026-04-26The Asahi Linux project has announced significant progress in its ongoing effort to port the open-source operating system to Apple Silicon Macs. This latest update marks a major milestone in bringing full hardware support and system stability to M-series chips. Developers continue to refine the integration to provide a seamless native Linux experience on Apple hardware.

America's Geothermal Breakthrough
2026-04-26Enhanced geothermal systems represent a major technological breakthrough poised to significantly expand U.S. clean energy capacity. By unlocking vast underground heat resources, this innovation promises to deliver reliable, round-the-clock renewable power to the national grid.

OpenAI Privacy Filter
2026-04-26OpenAI has released the Privacy Filter, an open-weight model designed to detect and redact personally identifiable information in text with state-of-the-art accuracy. This new tool provides developers with a highly effective way to automatically scrub sensitive data from text inputs. By making the model open-weight, OpenAI is enabling the broader tech community to integrate and customize these advanced privacy safeguards in their own applications.

Clay PCB Tutorial
2026-04-26A newly published tutorial explores how makers can fabricate printed circuit boards using wild clay. This innovative DIY method provides a sustainable and accessible alternative to traditional materials for creating custom electronics.
Statecharts: hierarchical state machines
2026-04-26A recent guide explores the concept of statecharts, also known as hierarchical state machines, by detailing their definitions, benefits, and drawbacks compared to traditional state machines. The article also provides practical examples to help developers understand the differences and effectively implement them in their projects.

Mahjong: A Visual Guide
2026-04-26A newly released visual guide offers total beginners a quick five-minute tutorial on how to play Mahjong. The resource breaks down essential gameplay mechanics, covering everything from tile identification and wall mechanics to winning hands and turn actions.
Butterflies are in decline across North America, a look at the Western Monarch
2026-04-26Butterfly populations across North America, particularly the Western Monarch, are experiencing severe declines due to habitat loss, pesticide use, and climate change. Despite these significant environmental threats, conservation experts remain optimistic about the insects' long-term survival and recovery.
EU Age Control: The trojan horse for digital IDs
2026-04-26Online discussions regarding the EU's age verification mandates clarify that the policy is an explicit stepping stone toward a comprehensive cross-border digital identity system rather than a hidden trojan horse. While some readers defend the utility of mobile ID wallets for international authentication, many emphasize the critical need for privacy-preserving technologies to prevent corporate data harvesting. Ultimately, the debate underscores concerns that widespread digital identity checks could lead to severe privacy violations if businesses are permitted to store unnecessary personal information.
GnuPG – post-quantum crypto landing in mainline
2026-04-26GnuPG version 2.5.19 introduces the Kyber post-quantum encryption algorithm and SHA256 key fingerprints to secure communications against future quantum computing threats. The transition to quantum-safe encryption is being compared to Y2K, with the underlying migration requiring significant effort despite remaining largely seamless for average users. This update is considered critical to mitigate the risk of previously intercepted encrypted data being compromised once quantum decryption becomes viable.
Magic: The Gathering took me from N2 to Japanese fluency
2026-04-26A professional in Tokyo shares how playing Magic: The Gathering helped them transition from holding a JLPT N2 language certification to achieving practical fluency in Japanese. By using the card game to practice, they successfully bridged the gap between academic study and confidently managing professional projects in the Japanese workplace.
Show HN: Free textbook on engineering thermodynamics
2026-04-26The release of a free textbook on engineering thermodynamics has sparked discussions regarding the high costs of traditional textbook publishers and the financial realities of self-publishing. Readers praised the author for democratizing hard science education and sharing print-on-demand profit margins, while also highlighting the ongoing necessity for low-cost physical books in developing regions.
Math Is Hard – OpenBSD Stories
2026-04-26Sparked by an OpenBSD story regarding CPU division-by-zero exceptions, readers pivot into a broader critique of modern operating system design and the lingering dominance of the UNIX paradigm. Commenters express frustration that the industry relies on heavy, layered abstractions like Kubernetes rather than developing lean, vertically integrated systems, pointing to alternative microkernels like seL4 and Genode as potential steps forward.

Show HN: Turning a Gaussian Splat into a videogame
2026-04-26A developer has successfully transformed a photogrammetric 3D Gaussian Splat scene into a fully playable browser-based first-person shooter. Built entirely within the PlayCanvas engine, the project incorporates advanced mechanics such as collision detection, pre-baked lighting, and behavior-tree AI for non-player characters.

GoDaddy gave a domain to a stranger without any documentation
2026-04-26GoDaddy abruptly seized a domain name from an organization that had used it for 27 years and transferred it to a stranger. The domain registrar executed the sudden takeover without providing the original owners any advance warning or supporting documentation.
The Super Nintendo Cartridges (2024)
2026-04-26A discussion surrounding Super Nintendo cartridges and retro gaming technology celebrates the hardware ingenuity used to overcome the technical limitations of early consoles like the Atari 2600, NES, and Super Nintendo. Enthusiasts highlight fascinating cart-based workarounds, such as adding co-processors to expand processing power and using electrical shocks to bypass proprietary lockout chips. The conversation also reflects on the era's broader pioneering innovations, including the Sega Channel's early cable-based game distribution system.

Chernobyl wildlife forty years on
2026-04-26Marking four decades since the Chernobyl nuclear disaster, researchers are evaluating the long-term effects of radiation on the surrounding wildlife. The study examines how local animal populations have adapted and persisted within the heavily contaminated exclusion zone over the years. These findings offer unique insights into environmental resilience following a major nuclear catastrophe.