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All articles tagged with #science tech

NASA bets on nuclear propulsion to slash Mars journeys
science-tech12 days ago

NASA bets on nuclear propulsion to slash Mars journeys

NASA is accelerating nuclear propulsion efforts to shrink the Mars trip from more than six months to roughly three to four months, using nuclear thermal propulsion for high thrust and nuclear electric propulsion (ion thrusters) for fuel-efficient, long-duration power. The uncrewed SR-1 Freedom mission is planned for 2028 to test nuclear-powered deep-space travel and deploy Skyfall drones, aiming to prove the technology for future crewed missions. While offering shorter radiation exposure and more launch-window flexibility, the program faces safety, regulatory, and integration challenges before human flights.

via The Conversation|
#electric-propulsion#mars#nasa
Crickets may feel pain, prompting welfare questions for billions farmed annually
science-tech13 days ago

Crickets may feel pain, prompting welfare questions for billions farmed annually

A Royal Society B study tested 40 male and 40 female house crickets (Acheta domesticus) by applying a heat stimulus to an antenna and found they groomed the heated area significantly longer than controls, indicating pain-like responses beyond a reflex. With crickets being the world’s most farmed insect (about 370 billion annually), this suggests insects may have subjective experiences and underscores the need for welfare protections as giant-scale farming continues and concerns about animal suffering grow.

via The Conversation|
#animal-welfare#crickets#entomology
Stunning Alaska Landslide Caused a 1,580-Foot Tsunami Rise, Pushing for Early-W warning Systems
science-tech19 days ago

Stunning Alaska Landslide Caused a 1,580-Foot Tsunami Rise, Pushing for Early-W warning Systems

A near-record landslide at Tracy Arm, Alaska in August 2025 unleashed a tsunami that sent water 1,580 feet up the fjord wall—the second-highest on record—stripping rock from the walls as it moved down the arm. A new study from the Alaska Earthquake Center ties glacier retreat, warm ocean waters, heavy rain, and thousands of seismic tremors to this event and argues for the development of a tiered alert system that could provide time-based warnings for ships and nearby communities, though such large-scale landslide monitoring does not yet exist in the U.S. and would require cross-agency cooperation.

via The Conversation|
#alaska#landslide#science-tech
Space biosignatures demand patience: confirmations of life clues take years
science-tech28 days ago

Space biosignatures demand patience: confirmations of life clues take years

Astronomers detect molecules in space by matching spectral fingerprints from radio and infrared telescopes; while hundreds of astrochemical detections exist, claims of life-related molecules (like glycine in space or phosphine on Venus) have often been revised upon further scrutiny, illustrating that confirming potential biosignatures on distant worlds requires multiple signals, replication by independent teams, and time—so excitement about life’s clues tends to fade into cautious verification.

via The Conversation|
#astrochemistry#biosignatures#exoplanets
Flexible nanopillar film ruptures viruses on contact
science-tech1 month ago

Flexible nanopillar film ruptures viruses on contact

Researchers at RMIT developed a lightweight, flexible acrylic film with thousands of nanoscale pillars that mechanically rupture viral envelopes on contact, inspired by insect wing textures. Lab tests with human parainfluenza virus type 3 showed up to 94% of virus particles were destroyed within an hour. Pillar spacing (around 60 nanometers) mattered more than pillar height, and the scalable molding process could enable antiviral coatings for phones, hospital equipment, and public transit—providing a chemical-free alternative to disinfectants, though real-world durability remains to be tested.

via The Conversation|
#antiviral-surfaces#infection-control#materials-science
Artemis II Mirrors Verne’s Moon Dream, Weighing Unity and Consequences
science-tech1 month ago

Artemis II Mirrors Verne’s Moon Dream, Weighing Unity and Consequences

NASA’s Artemis II marks the first crewed return to the Moon in 50 years and, as The Conversation argues, echoes Jules Verne’s From the Earth to the Moon by situating spaceflight within social, political and environmental contexts. The mission blends national ambition with international collaboration, symbolized by a diverse crew and global cooperation, even as geopolitical rivalry with China shapes its rhetoric. Beyond gadgets, the article stresses space exploration’s broader costs and benefits—from economic opportunities to environmental and ethical considerations—urging reflection on the full consequences of humanity’s push toward the Moon.

via The Conversation|
#artemis-ii#environmental-impact#jules-verne
Autonomous AI Labs Are Accelerating Biology—And Heightening New Risks
science-tech1 month ago

Autonomous AI Labs Are Accelerating Biology—And Heightening New Risks

AI-powered cloud laboratories can autonomously design and run thousands of biological experiments, slashing costs and speeding protein design, but governance and safety measures have not kept pace. The technology raises dual-use concerns and potential misuse, prompting calls for stronger DNA screening, model evaluations, and coordinated international frameworks to manage AI-driven biology while preserving innovation.

via The Conversation|
#ai#automation#biology
Ancient microbes reveal how complex life may have formed on Earth
science-tech1 month 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.

via The Conversation|
#asgard-archaea#eukaryotes#malgana-language
AI helps tailor cancer vaccine for dog, but scientists urge caution
science-tech2 months ago

AI helps tailor cancer vaccine for dog, but scientists urge caution

An Australian tech entrepreneur used AI tools to help design a personalized mRNA cancer vaccine for his eight-year-old dog, Rosie, after mast cell tumors persisted post-surgery and chemotherapy. DNA sequencing of Rosie’s tumor identified mutations (neoantigens); AI helped select targets, and researchers at the University of New South Wales turned these into an experimental vaccine administered to Rosie, with several tumors shrinking and the dog showing improved energy. However, this is a single case, not a controlled study, so it cannot be taken as a cure and highlights the need for robust testing, ethical safeguards, and careful interpretation of AI-assisted results before broader use.

via The Conversation|
#ai#cancer-vaccine#dna-sequencing
Humans mirror animal preferences in mating calls, study finds.
science-tech2 months ago

Humans mirror animal preferences in mating calls, study finds.

A global experiment analyzed 110 sound pairs from 16 species (birds, frogs, insects, mammals) and found that about 4,000 human listeners tended to prefer the same calls animals use to attract mates. The stronger the animal preference, the more likely humans agreed, and participants were faster to pick the preferred sounds, suggesting shared neural processing in sound perception. The researchers note many questions remain, including why some humans still disagree and whether similar cross-species preferences exist for visuals or smells.

via The Conversation|
#animal-behavior#cross-species#nature-sounds
Predictive AI and the Risk of Homogenizing a Writer's Voice
science-tech2 months ago

Predictive AI and the Risk of Homogenizing a Writer's Voice

As predictive AI becomes a routine writing partner, critics warn that its text tends to standardize prose, potentially erasing individual authorial voice. The piece argues that while AI can assist drafting, true voice comes from human creativity and personal experience; to preserve uniqueness, educators should design assignments that force personal connections, unpredictability, and emotional depth—areas where AI still struggles to replicates radical stylistic leaps.

via The Conversation|
#ai#language#predictive-writing
A Century in Orbit: From Goddard’s 1926 Rocket to Private Spaceflight
science-tech2 months ago

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.

via The Conversation|
#goddard#nasa#rocket
From Storage to Heat: Harnessing Fat's Energy-Burning Power for Weight Loss
science-tech2 months ago

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.

via The Conversation|
#adipose-tissue#beige-fat#brown-fat
Why a 90s rap sticks with you but a hallway thought slips away
science-tech2 months ago

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.

via The Conversation|
#doorway-effect#long-term-memory#memory
NASA Overhauls Artemis Timeline, Sets Two Moon Landings for 2028
science-tech2 months ago

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.

via The Conversation|
#artemis#artemis-ii#canadarm3