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Autonomous AI Labs Are Accelerating Biology—And Heightening New Risks
1 day ago•Source: The Conversation
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11.375 min•1 day ago
Ancient microbes reveal how complex life may have formed on Earth
Researchers studying Shark Bay stromatolites show that Asgard archaea and a sulfate‑reducing bacterium directly interact, observed with DNA sequencing, AI protein modeling, and high-resolution imaging, offering a plausible model for the origin of eukaryotes and complex life; the new archaeon was named Nerearchaeum marumarumayae in collaboration with the Malgana people, highlighting a blend of modern science and Indigenous knowledge.
12.425 min•21 days ago
AI helps tailor cancer vaccine for dog, but scientists urge caution
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Humans mirror animal preferences in mating calls, study finds.
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Predictive AI and the Risk of Homogenizing a Writer's Voice
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A Century in Orbit: From Goddard’s 1926 Rocket to Private Spaceflight
100 years after Robert Goddard’s first liquid-fueled rocket in 1926, this piece traces a century of spaceflight—from early rockets and Sputnik to Apollo and the Space Shuttle—and the rise of private companies like SpaceX; it notes Artemis delays and China’s Moon plans as leadership shifts from government programs to a growing private sector, bringing both breakthroughs and ongoing challenges for the future of space exploration.
From Storage to Heat: Harnessing Fat's Energy-Burning Power for Weight Loss
Fat is not just storage: brown fat burns calories to generate heat, beige fat can arise within white fat, and both offer targets for obesity therapies. The next generation of treatments may combine GLP-1–based appetite suppression with methods to boost energy expenditure across fat, muscle, and liver, aiming for more durable weight loss while avoiding hunger-driven compensation. This reframes fat as a dynamic metabolic organ and points to a multi-tissue, precision approach to energy balance.
Why a 90s rap sticks with you but a hallway thought slips away
Memory isn’t a single thing: lyrics can be remembered for decades because long‑term encoding recruits multiple brain networks (language, auditory, motor and emotion) and is strengthened by repeated exposure, while an intention formed in one room relies on fragile working memory that can be disrupted by context shifts (the doorway effect). The piece notes music memory often remains robust even with neurodegeneration, and offers tips to reduce these lapses—verbalize the task, visualize the target, or carry a physical cue before moving between spaces.
NASA Overhauls Artemis Timeline, Sets Two Moon Landings for 2028
NASA is reshaping the Artemis program: Artemis III will conduct in‑orbit technology tests instead of a lunar landing, while Artemis IV will become the first crewed Moon landing in 2028, with two Moon landings that year and a cadence of annual missions thereafter. The plan emphasizes testing life support, propulsion and communications in orbit, potential docking with commercial lunar landers, and upgrades to the Orion/AxEMU suits, with the Lunar Gateway not mentioned in the current briefing. The shake‑up follows delays, a multi‑year mission gap, and a workforce reduction, and aims to speed up missions by standardizing the Space Launch System upper stage.
Megaconstellations Could Turn Earth's Atmosphere Into a Crematorium
Researchers warn that the rapid push to satellite mega-constellations—SpaceX and other operators planning up to a million satellites—could cause vast amounts of debris to re-enter and burn up in the upper atmosphere, releasing alumina and other particulates that heat the atmosphere and deplete ozone, with potentially lasting climate impacts. Ground debris and casualty risks rise as more satellites are launched, and a million-satellite scale could significantly alter atmospheric chemistry. The piece calls for global regulation and a defined atmospheric carrying capacity for launches and re-entries, plus full lifecycle environmental assessments, urging SpaceX to take a leadership role.
Infrared fingerprints tie some 3D-printed guns to their filament
A Curtin University study published in Forensic Chemistry shows that infrared spectroscopy of 3D-printing filaments can distinguish many filament types and link seized ghost guns to their source, challenging the notion that ghost guns are truly untraceable; however, some filaments remain indistinguishable, and researchers plan to add more analytical techniques to strengthen traceability.
Megaconstellations Threaten the Night Sky and Cultural Heritage
SpaceX filed for a megaconstellation of up to a million satellites to power space-based data centers, joining a boom of proposals that could raise the number of active satellites from about 14,000 today to millions. The article warns this will permanently alter the night sky, disrupt astronomy and Indigenous cultural practices, and raise environmental and regulatory gaps, noting the lack of unified space traffic management. It advocates a Dark Skies Impact Assessment to document cumulative effects, explore mitigation, and inform licensing—aiming to improve decision-making rather than veto space development.
Space-grown mushrooms test future nutrition for deep-space missions
Researchers grew edible fungi (lion’s mane, turkey’s tail, cordyceps) as mycelium aboard the ISS in 2024 to explore space nutrition for long missions. After returning to Earth, the samples were cultivated into mushrooms on Earth, eaten in recipes, and shown to continue producing harvests in various environments, suggesting microgravity doesn’t hinder their growth and hinting at space-provisioned food for future expeditions like Artemis II.
Canada's Hansen Heads on Artemis II, NASA's First Crewed Moon Mission in 54 Years
NASA's Artemis II mission launches from Kennedy Space Center with Canadian astronaut Jeremy Hansen aboard the Orion spacecraft on the Space Launch System, marking the first crewed Moon flight since 1972. Over about 10 days the crew will test essential life-support and onboard systems, perform a lunar fly-by on a free-return trajectory, and reinforce international collaboration under the Artemis Accords as groundwork for a lunar base and eventual Mars missions.
Brain sculpting isn’t fantasy: adulthood can change its structure and function
For much of the 20th century, scientists believed the adult brain was fixed, but neuroplasticity now shows the brain can change throughout life in response to experience—though changes are gradual and bounded. The article traces this shift from Hebb’s 1949 idea to modern imaging that reveals learning reshapes brain activity and connectivity, with the hippocampus showing limited adult neurogenesis. Change is strongest with effortful, meaningful engagement and is enhanced by practice, regular exercise (which raises BDNF) and sleep, while chronic stress can impair plasticity. Plasticity can be maladaptive, reinforcing harmful patterns like chronic pain or addiction, but therapies such as cognitive behavioral therapy and rehab can steer it toward recovery. The piece also debunks myths of rapid, limitless change, emphasizing that real brain remodeling comes from challenging, real-life activities like language learning, playing music, and complex social interaction.