NASA is working to resolve fueling problems with its Space Launch System rocket before the Artemis III mission, while also preparing for a second countdown rehearsal for the Artemis II mission, according to Ars Technica. The agency is also facing scrutiny over a US-funded vaccine trial deemed unethical by the World Health Organization (WHO).
Ars Technica reported that NASA Administrator Jared Isaacman stated the agency is looking at ways to prevent the fueling problems that have plagued the Space Launch System rocket before the Artemis III mission, which is slated to be the first crewed mission to land on the Moon since the Apollo program. Artemis II, which remains on the launch pad at Kennedy Space Center in Florida after missing a launch window earlier this month, is preparing for a second countdown rehearsal as soon as next week to confirm whether technicians have resolved a hydrogen fuel leak that cut short a practice countdown run on February 2.
In other news, the WHO released a formal statement blasting a US-funded vaccine trial as unethical, according to Ars Technica. The trial, conducted in Guinea-Bissau, Africa, would withhold an established, safe, and potentially lifesaving vaccine against hepatitis B from some newborns. The WHO concluded the trial was inconsistent with established ethical and scientific principles, citing a bullet-point list of reasons the trial was harmful and low quality. The trial has drawn widespread condemnation from health experts since notice of the US funding was published in the Federal Register in December.
In the tech world, Nvidia researchers have developed a technique called dynamic memory sparsification (DMS) that can reduce the memory costs of large language model (LLM) reasoning by up to eight times without losing accuracy, according to VentureBeat. DMS compresses the key value (KV) cache, the temporary memory LLMs generate and store as they process prompts and reason through problems and documents. Experiments show that DMS enables LLMs to "think" longer and explore more solutions without the need for increased memory.
Also, VentureBeat reported that security leaders are concerned about employees deploying OpenClaw on corporate machines with single-line install commands, granting autonomous agents shell access, file system privileges, and OAuth tokens to Slack, Gmail, and SharePoint. Censys tracked the open-source AI agent from roughly 1,000 instances to over 21,000 publicly exposed deployments in under a week.
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