Corners in focus: Metasurface enables motion tracking without digital image processing

A research team at City University of Hong Kong (CityUHK) has developed a new optical corner-detection imaging method that ...

The cat-and-mouse game over 3D-printed guns has begun

The creator of the world’s first 3D-printed gun claims he’s developed a way to thwart government-mandated software meant to ...
National Geographic

How Echolocation Lets Animals—and Some Humans—Navigate by Sound

Nature’s own sonar system, echolocation occurs when an animal emits a sound wave that bounces off an object, returning an echo that provides information about the object’s distance and size. Over a ...
The Debrief

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 ...