Pentagon rescinds new testosterone screening policy without explanation

Following Defense Secretary Pete Hegseth's startling announcement in July that the US military would begin mandatory testosterone screening for personnel, the Pentagon released a clinical guidance document on September 2 outlining the new medically questionable policy.…

• The next day, though, the clinical guidance document disappeared, as d…
• The withdrawal was first reported by Reuters.
• In a statement sent to Ars Technica, the Pentagon said that the docume…

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Once popular for attacking AI, ASCII smuggling is embraced by spammers

A clever technique used to hide malicious prompts in attacks on AI agents has been adopted by spammers to evade filters on email platforms that are designed to flag unwanted messages used in mass campaigns.…

• The technique is broadly known as ASCII smuggling.
• It gained attention two years ago as a means of making a class of AI a…
• Malicious instructions embedded in emails or other untrusted content t…

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“Trust, not features, is the real deficit”: VMware tries to appease SMBs

For many small-to-medium-sized businesses (SMBs), VMware has become too expensive.…

• Broadcom’s acquisition of the virtualization firm brought the end of p…
• The most obvious is VMware Cloud Foundation (VCF), VMware’s flagship p…
• Many SMBs find that VCF is unaffordable and stuffed with unnecessary o…

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Medieval manuscripts are "biological time capsules" for deadly sheeppox virus

Sheeppox is a highly contagious, often fatal viral disease that was largely eradicated from much of European livestock in the 20th century.…

• But there is still the occasional regional outbreak, such as the one t…
• In order to reconstruct how the virus has evolved over the last 3,500 …
• They reported their findings in a new paper published in the journal S…

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The 6 Best Monitors That Actually Work Well With Macs

Macs are fantastic computers, but you’ll need one of these great displays to complete your work-from-home setup.

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Measles Outbreaks Are Forcing Parents of Immunocompromised Kids to Make Hard Choices

With the risk of infection rising, parents and their children are trying to navigate how safe it is to be out in public as school starts back up.

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How a Secret Orangutan Breeding Program Is Creating a Baby Boom

The success of a program linking zoos across the US has created social media stars and generated a wave of interest in how to protect the endangered great apes in the wild.

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The Best Automatic Litter Box of 2026: Petkit and Litter-Robot

With these high-tech automatic litter boxes, gone are the days of scooping and smells. Welcome to the future.

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The Best Dyson Vacuums (2026) to Buy—and Some to Avoid

Feeling the pull of a new clean machine? I'll help you make sense of Dyson’s whirlwind vacuum lineup.

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Japan Is Launching a Probe to Collect the First-Ever Samples From a Martian Moon

The mission to Phobos, Japan’s first Mars probe launch in 28 years, may reveal new information about our closest planetary neighbor.

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Who Cares if AI Is Conscious—It’s Basically Alive

While philosophers ponder AI consciousness, the models have ideas of their own.

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Tesla’s Cybercab Officially Launches Today. It’s Already Under Investigation

The US government is investigating whether the Cybercab, which lacks a steering wheel and pedals, meets vehicle safety standards.

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Casio ‘CasioNaut’ G-Shock GMC-2500 GAC-2500 Series: Price, Specs, Availability

In what appears to be a follow-up to the mighty “CasiOak,” the rugged Japanese watch brand is expected to release an all-new luxury homage.

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Home Depot Labor Day Sale (2026): BOGO on Best Grills and Tools

The Home Depot Labor Day sale goes hard on grills and tools. Here are our recommendations on what to buy—and what to ignore.

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Apple Is Full of Surprises. Here’s What CNET Readers Anticipate Ahead of Wednesday’s Event

Apple Is Full of Surprises. Here’s What CNET Readers Anticipate Ahead of Wednesday’s Event

• Apple Is Full of Surprises. Here’s What CNET Readers Anticipate Ahead of Wednesday’s Event

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The Big Questions Before Apple’s Big iPhone Event

The Big Questions Before Apple’s Big iPhone Event

• The Big Questions Before Apple’s Big iPhone Event

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I Watched a Floor Washing Robot Mothership Deploy a Roomba Using a Mechnical Arm

I Watched a Floor Washing Robot Mothership Deploy a Roomba Using a Mechnical Arm

• I Watched a Floor Washing Robot Mothership Deploy a Roomba Using a Mechnical Arm

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阿根廷人抗议 Peter Thiel

硅谷亿万富翁、Palantir 联合创始人 Peter Thiel 前不久携家人移居了阿根廷，并斥资 1200 万美元购买了一栋豪宅。许多人猜测他可能是为了躲避可能的三次世界大战，阿根廷地处南半球深处，农业资源丰富，是末日避难的理想之地。…

• 然而 Peter Thiel 在阿根廷深入参与了当地的政治活动。
• 他与阿根廷总统 Javier Milei 及其亲密顾问进行了多次闭门会谈，之后 Milei 的政府提出了一系列符合 Peter Thiel …
• 很多人怀疑 Thiel 的 Palantir 公司可能与阿政府签订了未公开的合同。

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Trump White House just tossed a grenade into international space relations

The normally genteel world of international space policy turned ugly this week as several prominent US space companies—including SpaceX, Blue Origin, Stoke Space, K2, and Starcloud—pulled out of a high-profile French space summit organized by the country's president, Emmanuel Macron.…

• Politico first reported the diplomatic turmoil, saying that the White …
• Since then, the companies have largely pulled out of the meeting witho…
• Multiple sources confirmed to Ars that an official with the White Hous…

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Musk wins court order to block use of “Twitter,” but not “tweet” and bird logo

On Thursday, Elon Musk’s X won a court order blocking Operation Bluebird from launching a new app taking over the Twitter name.…

• In his opinion, Chief Judge Colm Connolly explained that Operation Blu…
• Therefore, X was likely to succeed on trademark infringement and dilut…
• Most compellingly, X argued that it still uses the Twitter name in the…

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Anthropic’s $2 trillion IPO puts powerful external trustees in spotlight

Anthropic’s prospective public-market investors must reckon with an external group of trustees that control the majority of the AI company’s board, as its planned blockbuster initial public offering forces close scrutiny of its experimental governance structure.…

• The company’s Long-Term Benefit Trust (LTBT) is a small group of advis…
• The trust holds no equity in Anthropic, but has significant influence,…
• Read full article Comments

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Second complete map of a fruit fly brain completed

On Friday, researchers announced the completion of a map of every neuron in the brain of a male fruit fly.…

• The "connectome" provides a tool that can accelerate neurobiology rese…
• But it also provides an opportunity to do some science on its own, as …
• The work also provided the team behind it the opportunity to refine to…

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Valve secretly leaked a Left 4 Dead 2 trailer to dodge the ESRB

Back in 2009, Ars wrote about what was being reported as a leaked trailer for the then-upcoming Left 4 Dead 2, saying the footage "looks like it’s straight from a high-gloss action movie.…

• " Today, we need to offer an important update to this crucial, 17-year…
• That news comes courtesy of former Valve writer Chet Faliszek, who sai…
• we leaked our trailer ahead of time because they wouldn't let us relea…

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科学家发现几乎所有近期捕获的金枪鱼都有寄生虫

巴西科学家分析了 53 条当地捕获的金枪鱼，发现几乎所有鱼都携带了寄生虫。研究团队共统计到 1600 多条寄生虫；肾脏和心脏是唯一没有寄生虫的器官；除此之外寄生虫遍布全身；53 条鱼有 96% 携带了寄生虫；肠道是感染最严重的器官，其次是肌肉组织（即食用部分），然后是胃。…

• 巴西研究人员分析的是学名为 Katsuwonus pelamis 的金枪鱼品种鲣鱼，它是巴西最丰富的金枪鱼品种，也是 2022 年全球捕捞量…

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