Astral Systems, a UK-based private commercial fusion company, has claimed to have become the first firm to successfully breed tritium, a vital fusion fuel, using its own operational fusion reactor. This achievement, made with the University of Bristol, addresses a significant hurdle in the development of fusion energy....

Scientists from Astral Systems and the University of Bristol produced and detected tritium in real-time from an experimental lithium breeder blanket within Astral’s multi-state fusion reactors. “There’s a global race to find new ways to develop more tritium than what exists in today’s world — a huge barrier is bringing fusion energy to reality,” said Talmon Firestone, CEO and co-founder of Astral Systems. “This collaboration with the University of Bristol marks a leap forward in the search for viable, greater-than-replacement tritium breeding technologies. Using our multi-state fusion technology, we are the first private fusion company to use our reactors as a neutron source to produce fusion fuel.”

Astral Systems’ approach uses its Multi-State Fusion (MSF) technology. The company states this will commercialize fusion power with better performance, efficiency, and lower costs than traditional reactors. Their reactor design, the result of 25 years of engineering and over 15 years of runtime, incorporates recent understandings of stellar physics. A core innovation is lattice confinement fusion (LCF), a concept first discovered by NASA in 2020. This allows Astral’s reactor to achieve solid-state fuel densities 400 million times higher than those in plasma. The company’s reactors are designed to induce two distinct fusion reactions simultaneously from a single power input, with fusion occurring in both plasma and a solid-state lattice.

“As we progress the fusion rate of our technology, aiming to exceed 10 trillion DT fusions per second per system, we unlock a wide range of applications and capabilities, such as large-scale medical isotope production, fusion neutron materials damage testing, transmutation of existing nuclear waste stores, space applications, hybrid fusion-fission power systems, and beyond.”

This provides the community access to the full implementation of the chat-based coding assistant, including the implementation of “agent mode,” what contextual data is sent to large language models (LLMs), and the design of system prompts. The GitHub repository hosting the code also details telemetry collection mechanisms, addressing long-standing questions about data transparency in AI-assisted coding tools…

As the VS Code team explained previously, shifts in AI tooling landscape like the rapid growth of the open-source AI ecosystem and a more level playing field for all have reduced the need for secrecy around prompt engineering and UI design. At the same time, increased targeting of development tools by malicious actors has increased the need for crowdsourcing contributions to rapidly pinpoint problems and develop effective fixes. Essentially, openness is now considered superior from a security perspective.

Now that the extension is open source, developers can audit how agent mode actually works. You can also dig into how it manages your data, customize its behavior, or build entirely new tools on top of it. This could be especially useful in enterprise environments where compliance and control are non negotiable.

It is worth pointing out that the backend models powering Copilot remain closed source. So no, you won’t be able to self host the whole experience or train your own Copilot. But everything running locally in VS Code is now fair game. Microsoft says it is planning to eventually merge inline code completions into the same open source package too, which would make Copilot Chat the new hub for both chat and suggestions.

Scientists have long believed that long-term, low-grade inflammation — also known as “inflammaging” — is a universal hallmark of getting older. But this new data raises the question of whether inflammation is directly linked to aging at all, or if it’s linked to a person’s lifestyle or environment instead. The study, which was published Monday, found that people in two nonindustrialized areas experienced a different kind of inflammation throughout their lives than more urban people — likely tied to infections from bacteria, viruses and parasites rather than the precursors of chronic disease. Their inflammation also didn’t appear to increase with age.

Scientists compared inflammation signals in existing data sets from four distinct populations in Italy, Singapore, Bolivia and Malaysia; because they didn’t collect the blood samples directly, they couldn’t make exact apples-to-apples comparisons. But if validated in larger studies, the findings could suggest that diet, lifestyle and environment influence inflammation more than aging itself, said Alan Cohen, an author of the paper and an associate professor of environmental health sciences at Columbia University. “Inflammaging may not be a direct product of aging, but rather a response to industrialized conditions,” he said, adding that this was a warning to experts like him that they might be overestimating its pervasiveness globally.

“How we understand inflammation and aging health is based almost entirely on research in high-income countries like the U.S.,” said Thomas McDade, a biological anthropologist at Northwestern University. But a broader look shows that there’s much more global variation in aging than scientists previously thought, he added… McDade, who has previously studied inflammation in the Tsimane group, speculated that populations in nonindustrialized regions might be exposed to certain microbes in water, food, soil and domestic animals earlier in their lives, bolstering their immune response later in life.

Chronic inflammation is thought to speed up the ageing process and contribute to various health conditions such as Alzheimer’s disease, arthritis, cancer, heart disease, and Type 2 diabetes… However, other experts shared a word of caution before jumping to conclusions from the study. Vishwa Deep Dixit, director of the Yale Center for Research on Aging, told the New York Times it’s not surprising that people less exposed to pollution would see lower rates of chronic disease.

On HackerOne, which connects organizations with ethical hackers to participate in their bug bounty programs, “Xbow” scored notably higher than 99 other hackers in identifying and reporting enterprise software vulnerabilities. It’s a first in bug bounty history, according to the company that operates the eponymous bot…

Xbow is a fully autonomous AI-driven penetration tester (pentester) that requires no human input, but, its creators said, "operates much like a human pentester" that can scale rapidly and complete comprehensive penetration tests in just a few hours. According to its website, it passes 75% of web security benchmarks, accurately finding and exploiting vulnerabilities.

Xbow submitted nearly 1,060 vulnerabilities to HackerOne, including remote code execution, information disclosures, cache poisoning, SQL injection, XML external entities, path traversal, server-side request forgery (SSRF), cross-site scripting, and secret exposure. The company said it also identified a previously unknown vulnerability in Palo Alto’s GlobalProtect VPN platform that impacted more than 2,000 hosts. Of the vulnerabilities Xbow submitted over the last 90 days, 54 were classified as critical, 242 as high and 524 as medium in severity. The company’s bug bounty programs have resolved 130 vulnerabilities, and 303 are classified as triaged.

Notably, though, roughly 45% of the vulnerabilities it found are still awaiting resolution, highlighting the “volume and impact of the submissions across live targets,” Nico Waisman, Xbow’s head of security, wrote in a blog post this week… To further hone the technology, the company developed “validators,” — automated peer reviewers that confirm each uncovered vulnerability, Waisman explained.

With the new funding, XBOW plans to grow its engineering team and expand its go-to-market efforts. The product is now generally available, and the company says it is working with large banks, tech firms, and other organizations that helped shape the platform during its early testing phase. XBOW’s long-term goal is to help security teams stay ahead of adversaries using advanced automation. As attackers increasingly turn to AI, the company argues that defenders will need equally capable systems to match their speed and sophistication.

Under the agreement, HPE has agreed to divest its Instant On unit, which sells a range of enterprise-grade Wi-Fi networking equipment for campus and branch deployments. It has also agreed to license Juniper’s Mist AIOps source code — a software suite that enables AI-based network automation and management. HPE can live with that, since its primary motivation for buying Juniper is to improve its prospects in an IT networking market dominated by Cisco, where others like Arista and increasingly Nokia and Nvidia are also trying to make inroads.

Investors were obviously happy about this, as according to data compiled by S&P Global Market Intelligence the company’s stock price ballooned by nearly 16% across the week, largely on the news.... The Justice Department had alleged, in a lawsuit filed in January, that an HPE/Juniper tie-up would essentially result in a duopoly in networking equipment. It claimed that a beefed-up HPE and networking incumbent Cisco would hold more than 70% combined of the domestic market.

Wild orcas across four continents have repeatedly floated fish and other prey to astonished swimmers and boaters, hinting that the ocean’s top predator likes to make friends. Researchers cataloged 34 such gifts over 20 years, noting the whales often lingered expectantly — and sometimes tried again — after humans declined their offerings, suggesting a curious, relationship-building motive…

“Orcas often share food with each other — it’s a prosocial activity and a way that they build relationships with each other,” said study lead author Jared Towers, of Bay Cetology in British Columbia, Canada. “That they also share with humans may show their interest in relating to us as well.”

iOS 26 is a packed update for iPhone users thanks to the new Liquid Glass design and major updates for Messages, Wallet, CarPlay, and more. But another new feature was just discovered in the iOS 26 beta: FaceTime will now freeze your call’s video and audio if someone starts undressing.

When Apple unveiled iOS 26 last month, it mentioned a variety of new family tools… “Communication Safety expands to intervene when nudity is detected in FaceTime video calls, and to blur out nudity in Shared Albums in Photos.” However, at least in the iOS 26 beta, it seems that a similar feature may be in place for all users — adults included.

Stratascale researcher Rich Mirch, who is credited with discovering and reporting the flaws, said CVE-2025-32462 has managed to slip through the cracks for over 12 years. It is rooted in the Sudo’s "-h” (host) option that makes it possible to list a user’s sudo privileges for a different host. The feature was enabled in September 2013. However, the identified bug made it possible to execute any command allowed by the remote host to be run on the local machine as well when running the Sudo command with the host option referencing an unrelated remote host. “This primarily affects sites that use a common sudoers file that is distributed to multiple machines,” Sudo project maintainer Todd C. Miller said in an advisory. “Sites that use LDAP-based sudoers (including SSSD) are similarly impacted.”

CVE-2025-32463, on the other hand, leverages Sudo’s "-R” (chroot) option to run arbitrary commands as root, even if they are not listed in the sudoers file. It’s also a critical-severity flaw. “The default Sudo configuration is vulnerable,” Mirch said. “Although the vulnerability involves the Sudo chroot feature, it does not require any Sudo rules to be defined for the user. As a result, any local unprivileged user could potentially escalate privileges to root if a vulnerable version is installed....”

Miller said the chroot option will be removed completely from a future release of Sudo and that supporting a user-specified root directory is “error-prone.”

[T]wo companies were competitively selected in 2023 and are currently working through a multi-phase Energy Department authorization process to support the design, fabrication, construction, and testing of each fueled reactor experiment. Both are expected to meet certain milestones throughout the process to maintain their allotted time in DOME and to ensure efficient use of the test bed, according to the release… The department estimates each DOME reactor experiment will operate up to six months, with the DOME test bed currently under construction and on track to receive its first experiment in early 2026… The next call for applications is anticipated to be in 2026.

Based in Etna, Pennsylvania, Westinghouse will test its eVinci Nuclear Test Reactor, a compact, transportable microreactor that uses advanced heat pipe technology for passive cooling. Designed to deliver 5 megawatts of electricity on sites as small as two acres, eVinci could support applications ranging from remote communities to mining operations and data centers. Meanwhile, Radiant (El Segundo, California) will test its Kaleidos Development Unit, a 1.2 megawatt electric high-temperature gas reactor aimed at replacing diesel generators. Designed to run for five years, Kaleidos is fueled by TRISO fuel particles that could offer reliable backup power for hospitals, military bases, and other critical infrastructure.

A study published Monday in the Proceedings of the National Academy of Sciences found that increases in salinity in seawater near the surface could help explain some of the decrease in Antarctic sea ice that have been observed over the past decade, reversing a previous period of growth.

“The impact of Antarctic ice is massive in terms of sea-level rise, in terms of global warming, and therefore, in terms of extremes,” said Alessandro Silvano, a senior scientist at the University of Southampton studying the Southern Ocean and lead author of the study. The findings mean “we are entering a new system, a new world,” he said.

All of a sudden, it’s the year of AI coding agents. Claude released Claude Code, OpenAI released their Codex agent, GitHub released its own autonomous coding agent, and so on. I’ve done my fair share of writing about whether AI coding agents will replace developers, and in the meantime how best to use them in your work. Instead, I want to make what I think is now a pretty firm observation: AI coding agents have no secret sauce.

[…] The reason everyone’s doing agents now is the same reason everyone’s doing reinforcement learning now — from one day to the next, the models got good enough. Claude Sonnet 3.7 is the clear frontrunner here. It’s not the smartest model (in my opinion), but it is the most agentic: it can stick with a task and make good decisions over time better than other models with more raw brainpower. But other AI labs have more agentic models now as well. There is no moat.

There’s also no moat to the actual agent code. It turns out that “put the model in a loop with a ‘read file’ and ‘write file’ tool” is good enough to do basically anything you want. I don’t know for sure that the closed-source options operate like this, but it’s an educated guess. In other words, the agent hackers in 2023 were correct, and the only reason they couldn’t build Claude Code then was that they were too early to get to use the really good models.

The European Union’s landmark rules on AI will be rolled out according to the legal timeline in the legislation, the European Commission said on Friday, dismissing calls from some companies and countries for a pause.

Google owner Alphabet, Facebook owner Meta and other U.S. companies as well as European businesses such as Mistral and ASML have in recent days urged the Commission to delay the AI Act by years.

In an open letter, seen by the Financial Times, the heads of 44 major firms on the continent called on European Commission President Ursula von der Leyen to introduce a two-year pause, warning that unclear and overlapping regulations are threatening the bloc’s competitiveness in the global AI race.

[…] The current debate surrounds the drafting of a “code of practice,” which will provide guidance to AI companies on how to implement the act that applies to powerful AI models such as Google’s Gemini, Meta’s Llama and OpenAI’s GPT-4. Brussels has already delayed publishing the code, which was due in May, and is now expected to water down the rules.

A draft rule from the Commerce Department seeks to prevent China — to which the US has effectively banned sales of Nvidia’s advanced AI processors — from obtaining those components through intermediaries in the two Southeast Asian nations, according to people familiar with the matter. The rule is not yet finalized and could still change, said the people, who requested anonymity to discuss private conversations.

Officials plan to pair the Malaysia and Thailand controls with a formal rescission of global curbs from the so-called AI diffusion rule, the people said.