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On this day

Six people, five victims and the perpetrator are killed in Keyham, Plymouth in the worst mass shooting in the UK since 2010.

2021

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Thirty-nine civilians, including a dozen children, are killed in an explosion at a weapons depot in Sarmada, Syria.

2018

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The Unite the Right rally occurs in Charlottesville, Virginia, leading to three deaths and injuring nearly 50 more.

2017

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Syrian civil war: The Syrian Democratic Forces (SDF) capture the city of Manbij from the Islamic State of Iraq and the Levant (ISIL).

2016

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At least two massive explosions kill 173 people and injure nearly 800 more in Tianjin, China.

2015

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The Russian Navy submarine Kursk explodes and sinks in the Barents Sea during a military exercise, killing her entire 118-man crew.

2000

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Major League Baseball players go on strike, eventually forcing the cancellation of the 1994 World Series.

1994

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Canada, Mexico and the United States announce completion of negotiations for the North American Free Trade Agreement (NAFTA).

1992

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Sue, the largest and most complete Tyrannosaurus rex skeleton found to date, is discovered by Sue Hendrickson in South Dakota.

1990

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Japan Air Lines Flight 123, a Boeing 747, crashes into Osutaka ridge in Gunma Prefecture, Japan, killing 520, becoming the worst single-plane air disaster.

1985

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An infamous brawl takes place at the Atlanta-Fulton County Stadium between the Atlanta Braves and San Diego Padres.

1984

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The IBM Personal Computer is released.

1981

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The first free flight of the Space Shuttle Enterprise.

1977

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The Sri Lanka Riots, targeting the minority Sri Lankan Tamils, begin, less than a month after the United National Party came to power. Over 300 Tamils are killed.

1977

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Between 1,000 and 3,500 Palestinians are killed in the Tel al-Zaatar massacre, one of the bloodiest events of the Lebanese Civil War.

1976

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Violence erupts after the Apprentice Boys of Derry march in Derry, Northern Ireland, resulting in a three-day communal riot known as the Battle of the Bogside.

1969

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South Africa is banned from the Olympic Games due to the country's racist policies.

1964

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Echo 1A, NASA's first successful communications satellite, is launched.

1960

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Thermonuclear bomb testing: The Soviet atomic bomb project continues with the detonation of "RDS-6s" (Joe 4) using a "layered" scheme.

1953

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The 7.2 Ms Ionian earthquake shakes the southern Ionian Islands with a maximum Mercalli intensity of X (Extreme). Between 445 and 800 people are killed.

1953

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The Night of the Murdered Poets: Thirteen prominent Jewish intellectuals are murdered in Moscow, Russia, Soviet Union.

1952

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Korean War: Bloody Gulch massacre: Seventy-five American POWs are massacred by the North Korean Army.

1950

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Between 15 and 150 unarmed members of the Khudai Khidmatgar movement are killed by Pakistani police.

1948

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Waffen-SS troops massacre 560 people in Sant'Anna di Stazzema.

1944

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Nazi German troops end the week-long Wola massacre, during which time at least 40,000 people are killed indiscriminately or in mass executions.

1944

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Alençon is liberated by General Philippe Leclerc de Hauteclocque, the first city in France to be liberated from the Nazis by French forces.

1944

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World War I: France, the United Kingdom and the British Empire declare war on Austria-Hungary.

1914

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World War I: The Battle of Halen a.k.a. Battle of the Silver Helmets, a clash between large Belgian and German cavalry formations at Halen, Belgium.

1914

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The Hawaiian flag is lowered from ʻIolani Palace in an elaborate annexation ceremony and replaced with the flag of the United States to signify the transfer of sovereignty from the Republic of Hawaii to the United States where it is formally recognized as Hawaii.

1898

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The last quagga dies at the Natura Artis Magistra, a zoo in Amsterdam, Netherlands.

1883

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Joseph Lister, British surgeon and scientist, performs the first antiseptic surgery.

1865

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Isaac Singer is granted a patent for his sewing machine.

1851

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French intervention forces William I of the Netherlands to abandon his attempt to suppress the Belgian Revolution.

1831

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Santiago de Liniers, 1st Count of Buenos Aires re-takes the city of Buenos Aires, Argentina after the first British invasion.

1806

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The Rhône and Loire départments are created when the former département of Rhône-et-Loire is split into two.

1793

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The Anjala conspiracy is signed.

1788

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Treaty of Allahabad is signed. The Treaty marks the political and constitutional involvement and the beginning of Company rule in India.

1765

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Battle of Mohács: Charles of Lorraine defeats the Ottoman Empire.

1687

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Praying Indian John Alderman shoots and kills Metacomet, the Wampanoag war chief, ending King Philip's War.

1676

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Charles de La Vieuville is arrested and replaced by Cardinal Richelieu as the French king's chief advisor.

1624

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First engagement of the Battle of Zonchio between Venetian and Ottoman fleets.

1499

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Christopher Columbus arrives in the Canary Islands on his first voyage to the New World.

1492

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Andronikos IV Palaiologos enters Constantinople by force and captures his father, emperor John V Palaiologos, and his younger brothers during the Byzantine civil war of 1373–1379.

1376

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The Treaty of Nöteborg between Sweden and Novgorod Republic is signed, regulating the border between the two countries for the first time.

1323

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The Republic of Venice acquires the right to Crete from Boniface I of Montferrat.

1204

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Battle of Harim: Nur ad-Din Zangi defeats the Crusader armies of the County of Tripoli and the Principality of Antioch.

1164

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Battle of Didgori: The Georgian army under King David IV wins a decisive victory over the famous Seljuk commander Ilghazi.

1121

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First Crusade: Battle of Ascalon: Crusaders under the command of Godfrey of Bouillon defeat Fatimid forces led by Al-Afdal Shahanshah. This is considered the last engagement of the First Crusade.

1099

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Top Stories from Hacker News

WorldClaw Agentic 3D open-world generation at scale

WorldClaw is an agentic framework that turns one open-ended prompt into an explicit, explorable, and editable open-world 3D scene.

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OpenAI’s head of ethics leaves less than a year after joining

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Jolt: Clojure compiler implemented with Chez Scheme

Jolt is a Clojure implementation on Scheme — Chez natively, Gambit for JavaScript. Self-hosted compiler, Clojure-compatible standard library, no JVM.

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Making holograms with a pen plotter

I have a pen-plotter! It’s great. It’s like having a printer but slow and it breaks more often. I got it on eBay and it came sorta broken and I immediately spent the difference between what I paid and the price of new one fixing it. Now it’s fixed!

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The Human Is the Loop

After a few weeks away from AI, I see my usage wasn't always productive or healthy.

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Show HN: Line9 – A Mermaid rendering engine with its own layout

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Nvidia Nemotron 3.5 Lightning and NeMo Switchyard

The new lightweight open model and routing library delivers greater control over AI, data and workflows across edge devices, PCs, workstations, data centers and the cloud.

199 points

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Company Offering '100% Human-Written, Never AI' Medical Research Is 100% AI

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Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo

Photosynthesis fires two of your iPhone's cameras at once and fuses the results into one high-res photo, with no generative AI. Coming to iPhone in 2026.

238 points

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The hardest working font in Manhattan (2025)

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Compression is prediction

Compression and LLMs are trying to solve the exact same problem: predicting what comes next. Learn the fundamentals of compression and how better prediction leads to better shrinkage.

380 points

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Go is an ideal language for AI-assisted software engineering

As AI shifts software engineering from writing to reviewing, discover how Go's strict compiler and unified toolchain ensure reliable AI-generated code.

311 points

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Stealing Reasoning Traces from Proprietary LLM APIs

Encrypted chain-of-thought blocks returned by Anthropic, OpenAI and Google APIs are interchangeable across sessions, users and models. We exploit this to decode hidden reasoning at scale.

557 points

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Grok Bot

Grok Bot is your team of always-on AI agents that finish the work. They have their own computer, use it like you do, and never log off.

208 points

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Neutrinos from Deep Inside Earth Provide a New Picture of the Mantle

A global constellation of neutrino detectors is creating a never-before-seen view of the radioactive elements that power Earth’s tectonic heat engine.

22 points

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England set to be one of the first countries to eliminate hepatitis C

England is on track to become one of the first countries in the world to eliminate hepatitis C, a dangerous virus that attacks the liver, figures show.

503 points

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Mojo 1.0

Today, the Mojo language officially reaches 1.0: a milestone the language has been building toward since its first release in 2023. Mojo has grown into a general-purpose language with a vibrant developer community writing their own libraries, tools, and applications on top of it. With Mojo 1.0, developers can now build for the long-term on a stable, production-ready language foundation.

337 points

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The lifesaving secret hidden inside a horseshoe crab's blue blood

CHATHAM, MASS. (WHDH) - A familiar sea creature that has helped save lives for decades may now need saving itself. Early each summer, horseshoe crabs crawl<a class="excerpt-read-more" href="https://whdh.com/news/the-lifesaving-secret-hidden-inside-a-horseshoe-crabs-blue-blood-and-the-race-to-protect-the-species/">Read More</a>

39 points

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New Bedford police officer accused of using Flock cameras to track ex-partner

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Show HN: Tamron Lens Utility Alternative on Linux

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44 points

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