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The Debrief

Science, Tech and Defense for the Rebelliously Curious.

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Bumblebees Are Turning Up Dead on Sidewalks This Summer, and Heat Isn’t the Only Culprit

This summer, people across the UK may be noticing dead bumblebees on pavements. This pattern results from a combination of naturally short life cycles, elevated temperatures, and long-term changes in land use.

Your Brain Has an Air Traffic Controller—Here’s How It Keeps Information Moving

Scientists have uncovered new details about how the brain’s “information hub” responds to uncertainty, revealing a remarkably flexible system that rapidly changes how it communicates with other brain regions as we make decisions.

James Webb Space Telescope Discovery Reveals Hidden Stars Massively Expanding Early Galaxies

James Webb Space Telescope data have revealed hidden stars that astronomers say are unexpectedly increasing the mass of early galaxies.

Experiments Show Color-Enriched White Light Can Affect Whether a Room Feels Hot or Cold

New experiments show that enriched white light containing invisible blue or red wavelengths can affect indoor temperature perception.

A Universal Quantum Behavior Achieved for the First Time Confirms the Distance Between Novel Quantum States

A universal quantum state, long the subject of theoretical predictions, has been achieved for the first time in simulated quantum matter.

Something Struck the Moon—and NASA’s Lunar Reconnaissance Orbiter Just Found the Crater

NASA’s Lunar Reconnaissance Orbiter (LRO) has captured the clearest images yet of a newly formed impact site on the Moon.

Mystery Russian “Space Hazard” Warning Forces U.S. Air Force Flight to Turn Back from Antarctica

This week, a USAF aircraft bound for Antarctica was forced to return to New Zealand after a warning of “potentially hazardous” space-related activity.

The Death of a Supercontinent May Have Formed the Grand Canyon Close to a Billion Years Earlier than Once Thought, New Study Reveals

The Grand Canyon, one of America’s most famous landmarks, may have been exposed when an ancient supercontinent cracked apart.

Newly Discovered Object is So Close to the Milky Way’s Central Black Hole it’s Experiencing Warped Spacetime

Astronomers have spotted an object so close to the supermassive black hole at the center of the Milky Way its experiencing warped spacetime.

Major Study Finds Hidden Order in the Psychedelic Brain That Challenges What We Thought About Psilocybin

Psilocybin may not simply cause brain chaos. Scientists discovered hidden order that changes with a person's experience and context.

Scientists Just Analyzed More Than 100 UAP Videos Released by the Pentagon’s ‘PURSUE’ Program—This is What They Learned

An analysis of 112 Pentagon UAP videos reveals a new problem for scientists working to discern whether they display anomalous capabilities.

New Radar Scans Reveal Mysterious “Subsurface Anomalies” Beneath Controversial “Noah’s Ark” Site

New scans may offer clues to what lies beneath Turkey’s famous Durupınar site, which has long been associated with “Noah’s Ark" claims.

Bridging the Supersonic-to-Hypersonic Gap, Scientists Reveal Scramjet Igniter That Maintains Combustion Below Mach 5

Scientists reveal the 'RD torch' igniter that bridges the supersonic-to-hypersonic gap by maintaining scramjet combustion below Mach 5.

U.S. Department of Defense Initiative Funds AI Scientists to Help Predict the Future on the Battlefield

The United States Department of Defense has asked AI scientists to build a tool to 'predict the future' in active battlefield environments.

Scientists Turn Sound Into a New Propulsion System for Tiny Microrobots

Microrobots powered by sound can move, steer and even fly, revealing a new propulsion system for tiny robotic machines.