The Hidden Layer Behind a Scientific Paper's Polished PDF
A scan of 2.7 million arXiv submissions reveals how comments, metadata and unused files can expose what polished PDFs conceal.
Technology
A Robot’s Secure Messages Can Still Tell a Dangerous Lie
A robot arm passed as trustworthy while its sensor reports were falsified, exposing a gap between cybersecurity checks and physical reality.
A Microscopic Heat Flash Reveals Chemistry Along a Living Cell
A resonant gold metasurface turns faint molecular vibrations into heat pulses, mapping lipid chemistry as it changes on living cell membranes.
The Biased Dataset That Helped Some AI Models Learn the Real Rule
In a toy transformer task, skewed training data sometimes helped deeper models escape shortcuts, while smaller models stayed trapped.
A single ring turns light into a pair of precision rulers
A single lithium niobate microring generates two offset light combs, pointing toward simpler spectroscopy while revealing hurdles to portable sensing.
The Buried Fiber Network That Can Hear an Earthquake’s Footsteps
A Hamburg fiber-optic network records earthquakes and seasonal shifts. A new method reveals which buried cable sections listen best.
The AI chip where light tackles the math that keeps changing
A fabricated photonic chip computes signed AI operations with light, but its slow prototype and power-hungry electronics reveal the hard part ahead.
Why Computed Crystals Wander Beyond the Lab’s Familiar Ground
A map of 167,500 real crystals reveals that computed candidates roam beyond familiar structures—and why that may be the point.
The crystal trick that makes old structures look newly discovered
A geometric audit of Google’s GNoME crystal catalogs shows why new-looking files can masquerade as new materials—and how to test novelty.
Fluorescent ions could pack 1.1 terabits onto an optical disc
A crystal-based optical memory uses implanted fluorescent ions and machine learning to push archival storage beyond a disc’s usual limits.
Could Muons See Soft Tissue—or Only the Scanner’s Expectations?
A CERN experiment tests whether muons can map soft tissue, revealing a low-dose imaging possibility and the limits of sparse data.
When Robot Skills Became Code, Biology Labs Got a New Tool
A robot kit and coding agent tackle wet-lab chores, revealing how adaptable software could help robotic skills travel between biology labs.
A Lab-Built Optical Nerve Lets a Robot Read Touch at a Distance
A soft sensor routes touch through 217 optical fibers to a remote camera, where simple image analysis locates and classifies contact.
A Wearable Air Pouch Lets a Robot’s Touch Reach Your Fingertip
A soft air-filled pouch sends a robot’s contact pressure to a person’s fingertip, helping operators handle objects more gently.
The chip-sized telescope instrument—and the tests it must survive
Photonic chips could shrink space-telescope instruments, but vibration, radiation and qualification hurdles still stand between the lab and orbit.
The AI Could Steer Its Reasoning—Once It Told Itself To
New experiments reveal that AI reasoning traces are easier to steer than earlier tests suggested—and that this control can complicate safety monitoring.
How a Robot Finds the Hidden Physics Behind an Ordinary Push
A robot’s world model learns hidden friction, mass and rules from a few interactions, helping it predict what actions will do.
The quantum shortcut to a cooler city may be a smaller question
Quantum computing may help cities sift high-stakes choices—from heat response to transport failures—without replacing proven planning tools.
A knitted robot turns its own fabric into moving machinery
A knitted origami robot uses programmed stitches and heat-fusible yarn to fold, rotate and travel along slender forms.
Optical Clocks Are Turning Tiny Time Shifts Into Earth Maps
Optical clocks can map Earth’s gravitational landscape by comparing how atoms tick at distant locations—revealing a new route to precision geodesy.