Plasma Physics

Radio waves drive a fusion plasma current that could help reactors run continuously

For the first time, a team of physicists in the U.S. has clearly demonstrated a "helicon current drive" in a nuclear fusion experiment. Led by Jeff Lestz at General Atomics, San Diego, the team took advantage of the latest ...

Cell & Microbiology

Protein fibers, a hallmark of Alzheimer's, spotted making genetic deliveries to sperm cells

Unexpectedly, a kind of protein that is usually linked with diseases in the brain may play a vital role in semen, helping shepherd genetic material into sperm cells, scientists at Columbia's Zuckerman Institute report in ...

AI chatbots may worsen symptoms in people with psychosis

Conversational AI chatbots are a relatively new technology, but they are now ubiquitous, embedded in everything from customer service platforms to personal productivity tools. Such is their rapid adoption that potential negative ...

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Tech Xplore

Could ecological roles offer clues to how life began?

Producers, consumers, and decomposers play different roles in today's ecosystems. Thinking about these familiar roles led me to a question: Could their differences partly reflect the different physical and chemical environments ...

Clouds on a lava planet challenge what astronomers expected

A rocky lava planet once thought to be too extreme to have an atmosphere appears to be wrapped in one with a reflective layer of vaporized silicate mineral clouds, the same family of compounds that make up quartz and sand.

Metalens microscope switches focus with voltage, not moving optics

Just as it is difficult for a camera to keep both a nearby flower and a distant mountain sharply focused at the same time, conventional optical microscopes face a similar challenge when imaging structures located at different ...

El Niño watch: The impacts around the world this week

The effects of El Niño are being felt globally, ranging from floods in Argentina to deadly fires in Peru and drought in French Guiana, and prompting a U.N. call for speedy action to face an unprecedented "wrecking ball" this ...

India orders evacuations as Cyclone Arnab looms

Indian authorities ordered nearly 100,000 people to evacuate homes in Andhra Pradesh and Odisha ahead of a severe cyclone the national weather office expects to make landfall by Wednesday.

Global happiness researchers reveal keys to a good life

Many of the world's leading happiness researchers say they consciously spend more time with loved ones after seeing the evidence, according to a new paper. "Happiness emerges from a symphony of factors, but if I had to pinpoint ...

Students' love-hate relationship with AI

ChatGPT hit like a meteorite in late 2022 and found fertile ground at EPFL, invading the computers and smartphones of tomorrow's engineers. Within two years, generative AI had spread like wildfire among our students owing ...