Articles by Andrew Zinin
Tech Xplore / AI often passes for human, but asking follow-up questions can trip it up
Reading a conversation and deciding whether a chatbot wrote it can be surprisingly difficult. In a study involving more than 72,000 judgments of human and AI responses, participants frequently mistook machine-generated captions, ...
Tech Xplore / Artificial skin helps robots grasp pencil lead and pull away from needles
Researchers have covered robotic fingers with a new artificial skin that allows the hand to grasp fragile pencil lead and pull away from a needle before it punctures the covering. Both actions depend on more than sensitive ...
Phys.org / FAST and Arecibo point to possible dark galaxy with vast hydrogen reservoir
Astronomers have found a vast reservoir of hydrogen with something conspicuously missing: detectable starlight. The object, called AGC 322753, contains roughly 2 billion times the sun's mass in neutral hydrogen, a potential ...
Phys.org / A few seconds of loading time can push online learners off track
An online lesson takes an extra second to load. The wait may seem trivial, but in a study examining large learning platforms, these brief pauses were linked to unfinished assignments, lower scores and less time spent on ...
Phys.org / DNA programs a cell-free material to build its own motors and move
Researchers have created a material that manufactures the proteins responsible for cell movement, without needing intact living cells. By embedding cell-free gene expression into a thin sheet of protein filaments, they were ...
Phys.org / Sinking Antarctic ice reveals a hidden lake's massive water loss
The Kronshtadskiy subglacial lake near East Antarctica's Amery Ice Shelf was hidden beneath Antarctica's ice, but its drainage left a mark visible from space as a broad depression that deepened by more than 6 meters (20 feet) ...
Phys.org / AI agents can form political camps—and changing their conversation partners does little to soften their views
Give AI agents political positions, ask them to defend their views and persuade one another, and let them decide which contacts to keep. This recent experiment, published in Nature Communications, found that over repeated ...
Phys.org / The sun may have stripped away meters of interstellar comet 3I/ATLAS
The interstellar comet 3I/ATLAS brought material from another planetary system within reach of our telescopes, but reading its chemistry poses a problem. Energetic particles encountered during its journey through space may ...
Tech Xplore / Switching languages can change a chatbot's personality test results
Ask an AI chatbot to complete a personality questionnaire in English, then give it the Mandarin version, and its answers paint a different picture. In tests of five systems, switching languages changed how strongly the responses ...
Phys.org / Salt crystals could hold clues to life beneath Enceladus's ice
The ocean beneath Saturn's moon Enceladus lies under kilometers of ice, but some of its contents do reach the surface. Jets near the south pole spray out water vapor and icy particles, offering a way to investigate the hidden ...
Phys.org / Math under pressure may make a gamble's downside seem smaller
People who tackled arithmetic problems while stressed by a countdown clock, error buzzers and an observer nearby later gave potential losses less weight when deciding whether to accept a gamble. This finding from a new study ...
Medical Xpress / A gut microbe makes a fatty acid that cuts artery plaque in half in mice
A common gut bacterium produces a molecule that slows cholesterol production in the liver. When researchers gave the molecule to mice prone to artery disease, the animals developed roughly half as much fatty plaque as untreated ...
Phys.org / Tiny fossils reveal a missing chapter of ocean life after Snowball Earth
A rare assemblage of micro- and macro-fossils found in a roadside outcrop in South China, featuring thin ribbons, branching shapes and a tiny balloon on a stalk, offers a glimpse of marine life after one of Earth's most extreme ...
Phys.org / Ball or strike? Why the count may change what a baseball umpire sees
In baseball, a borderline pitch is more likely to be called a strike when the batter has three balls and no strikes than when the count is no balls and two strikes. The official strike zone hasn't changed. The umpire's judgment ...
Medical Xpress / Two-trigger drugs target 'zombie' cancer cells with sharper aim
Stopping a cancer cell from dividing does not necessarily make it harmless. Chemotherapy can leave behind living, senescent cells. These 'zombie' cells can release inflammatory signals, helping tumors resist treatment. Drugs ...