General Physics

Centuries-old physics test could help detect millicharged particles

Theoretical physicists have long predicted the existence of millicharged particles (mCPs), hypothetical particles that carry a very small electric charge. These particles are expected to interact very weakly with ordinary ...

Ecology

Giant crocodylians dominated the food chain in Miocene South America, fossil evidence suggests

South America was a frightening place during the Miocene. More than 10 million years ago, a vast lake covered much of the continent, home to giant turtles and crocodylians.

Japan aims for the moons of Mars

Japanese scientists are readying a mission to Mars' moons to retrieve samples that may unlock the origins of the solar system and life on Earth, although a rival Chinese mission aims to make it back first.

A small squeeze reveals new clues about an unusual kind of magnet

Researchers at Rice University have found that gently squeezing a crystal of iron sulfide can change two of its unusual properties at the same time: its tiny magnetic signal and the way electricity moves through it. The result ...

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Medical Xpress

Tech Xplore

High-speed microscopy reveals electrical activity across the brain

Within the brain, neurons compute by generating electrical impulses. These signals travel throughout neurons, which are in turn connected in vast networks that control brain functions such as sensory perception, memory formation ...

Why AI training can backfire for older workers

Employers are increasingly investing in training to prepare their employees for artificial intelligence (AI). Training budgets are growing, and "upskilling" has become a common response to rapid technological change.