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The Economist
The Economist
12 Feb 2025


NextImg:A neutrino telescope spots the signs of something cataclysmic

A neutrino telescope spots the signs of something cataclysmic

What could have generated the most energetic neutrino ever detected?

ON FEBRUARY 13th 2023 an object with extraterrestrial origins went screaming through the Mediterranean Sea off the Sicilian coast. A single, super-energetic subatomic particle left a sparkling trail of light in the depths. And it did so right in the middle of an odd sort of telescope that was partway through construction. In a paper published in Nature this week, the scientists in charge of KM3Net discuss how they detected the signature of the most powerful neutrino that science has ever seen.


A wrist watch with a knife and fork as the arms and an assortment of food around the watchface

Does intermittent fasting work?

It does for weight loss. Its other supposed benefits are debatable


Cryptocurrencies are spawning a new generation of private eyes

Their tools are software, and a nose for trouble

Fine-tuned acoustic waves can knock drones out of the sky

The right sounds can also disable their cameras

Fighting the war in Ukraine on the electromagnetic spectrum

Drone operators and jammers are in a high-tech arms race