$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor
This article describes the development of a MANPADS (Man-Portable Air Defense System) System Launcher and Rocket, a critical component for defending against airborne threats. The project aims to create a reliable and effective system to protect against various aerial targets.
A Visual Introduction to Machine Learning (2015)
This article provides a visual introduction to machine learning, explaining the core concepts of supervised learning, training data, and model predictions. It uses a simple example of predicting house prices to illustrate these fundamental machine learning principles.
Pentagon expands oversight of Stars and Stripes, limits content
The Pentagon has released a modernization plan that aims to enhance military capabilities and readiness through investments in areas like artificial intelligence, hypersonic weapons, and space-based systems. The plan outlines strategies to leverage emerging technologies and strengthen the US military's competitive edge in the face of evolving global threats.
Glassworm Is Back: A New Wave of Invisible Unicode Attacks Hits Repositories
The article discusses a security vulnerability, known as the 'Glassworm' attack, that targets Unicode characters in software packages like GitHub, npm, and Visual Studio Code. The vulnerability allows attackers to execute arbitrary code by exploiting how these platforms handle certain Unicode characters.
Codegen is not productivity
The article argues that while code generation tools can be useful, they should not be seen as a magic solution to boost productivity. It suggests that developers should focus on understanding the problem domain and writing maintainable code, rather than relying too heavily on automated code generation.
IBM, sonic delay lines, and the history of the 80×24 display (2019)
The article explores the history of IBM's use of sonic delay lines, a pioneering data storage technology that predated modern digital computers. It provides insights into the technical development and applications of this early electronic computing approach.
UMD Scientists Create 'Smart Underwear' to Measure Human Flatulence
Researchers at the University of Maryland have developed smart underwear that can monitor and measure human flatulence. This innovative technology aims to provide valuable data for medical research and personal health tracking.
Grandparents are glued to their phones, families are worried [video]
The article examines the growing concern among families about grandparents becoming increasingly attached to their smartphones and digital devices, which can impact their ability to engage with their grandchildren and maintain meaningful in-person interactions.
Hollywood Enters Oscars Weekend in Existential Crisis
The article discusses the current existential crisis facing Hollywood as it approaches the 2023 Oscars ceremony. It explores the industry's challenges, including declining viewership, the shifting entertainment landscape, and the need to adapt to changing audience preferences.
Palantir defends its role in the kill chain: "We are proud of that"
The article discusses Palantir's defense of its role in the 'kill chain,' stating that the company is 'very, very proud' of its work in this area. It highlights Palantir's involvement in military and intelligence operations, which has been a subject of controversy.
Tech companies defeat bill as AI drains local water supplies
The article discusses the challenges faced by Olympic athletes in maintaining their mental health and well-being, highlighting the need for greater support and resources to address the emotional and psychological demands of elite sports.
NetBlocks says Iran blackout enters day 16 as arrests target Starlink users
The article discusses Iran's economic challenges, including high inflation, currency devaluation, and the impact of sanctions. It examines the government's efforts to address these issues, such as implementing austerity measures and seeking to boost non-oil exports.
The Webpage Has Instructions. The Agent Has Your Credentials
The article discusses the threat of prompt injections, where attackers exploit vulnerabilities in language models to manipulate the output. It highlights the importance of secure prompt engineering and the need for robust prompt validation to mitigate this emerging security risk.
Show HN: OpenClaw-superpowers – Self-modifying skill library for OpenClaw agents
I built a skill library for OpenClaw (always-on AI agent runtime, not session-based) where the agent can teach itself new behaviors during normal conversation.
The idea: you tell your agent "every time I ask for a code review, always check for security issues first." It invokes a create-skill skill, writes a new SKILL.md, and that behavior is live immediately — no restart, no config change, no developer required.
What I think is actually useful (the safety cluster):
• loop-circuit-breaker: OpenClaw retries ALL errors identically. This halts on the 2nd identical failure before it burns your context window. • spend-circuit-breaker: No built-in cap in OpenClaw. This tracks cumulative API cost and pauses non-essential crons at configurable thresholds. • workspace-integrity-guardian: Hashes SOUL.md, AGENTS.md, MEMORY.md. A corrupted SOUL.md = hijacked agent that survives restarts. • dangerous-action-guard: Explicit confirmation before rm -rf, git push --force, emails, financial actions. With audit log. • prompt-injection-guard: Scans external content (web scrapes, emails, docs) before acting on it.
Also: fact-check-before-trust (secondary verification for factual claims), project-onboarding (auto-generates PROJECT.md from a codebase), skill-vetting (security scanner — ~17% of community skills are malicious).
The U.S. Mint dropped the olive branch from the dime
The U.S. Mint has announced the release of a new 'Olive Branch Dime' to symbolize the nation's desire for peace in the midst of ongoing conflicts. The article discusses the design and significance of this new coin as a reflection of the country's commitment to diplomacy and conflict resolution.
Israel kill Palestinian couple and two of their children in occupied West Bank
The article discusses the ongoing war in Ukraine, focusing on the challenges faced by both Russia and Ukraine in the conflict. It explores the military strategies, economic impacts, and diplomatic efforts surrounding the war, providing a balanced overview of the current situation.
Ray Dalio: I fear we're entering the most dangerous phase of the 'Big Cycle'
The article discusses Ray Dalio's predictions about a potential global debt crisis and political disorder in the coming years. Dalio believes the world is entering a new 'big cycle' that will bring significant economic and geopolitical changes.
Show HN: AgentMailr – dedicated email inboxes for AI agents
I kept running into the same problem while building AI agents: every agent that needs email ends up sharing my personal inbox or a single company domain. That breaks attribution, creates deliverability risk, and makes it impossible to test sender identities per agent.
So I built AgentMailr. You call an API to create an inbox, your agent gets a unique email address, and replies route back to that specific agent. Works for both inbound (OTP parsing, reply routing) and outbound (cold email, notifications).
Bring your own domain is supported so emails come from your domain, not ours. REST API and MCP server are live. Node/Python SDKs are in progress.
Happy to answer questions about the architecture or how I'm handling multi-agent routing.
Meta and Google trial: are infinite scroll and autoplay creating addicts?
The article explores the impact of infinite scroll and autoplay features used by tech giants like Meta and Google, examining whether these design choices are contributing to user addiction and raising concerns about their psychological effects.
MacBook Neo Is the Most Repairable MacBook in 14 Years
The MacBook Neo is the most repairable MacBook in 14 years, with a modular design that allows easy access to internal components for repairs and upgrades, a stark contrast to recent MacBook models that are difficult to repair.