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Near-infrared spectroscopy, or fNIRS, offers a way to monitor brain activity without surgery or radiation by tracking changes in blood flow and oxygenation. Light sources placed on the scalp send near ...

Hair loss isn’t always dramatic. It can be incremental. You start noticing a bit more scalp in harsh bathroom lighting; a tiny bald spot when you tie your hair up in a ponytail. The shower drain is ...

Smoking remains a major global public health challenge, with approximately 1.3 billion people worldwide consuming tobacco in various forms. Despite widespread awareness of its serious health risks — ...

The (above) figure shows how light is focused into a tiny processing unit, allowing vast strings of computational information to be transferred without the use of energy-intensive circuitry. The other ...

Editor's note: An earlier version of this story included an incorrect graphic noting only two Anheuser-Busch beers in the 2025 Ad Meter top 10. In fact, there were four: one each from Budweiser, Bud ...

What do the traffic meters on some California highway onramps do, and do you have to obey them? Here’s what to know. The meters are intended to control the flow of traffic onto state highways to ...

Controlling light at dimensions thousands of times smaller than the thickness of a human hair is one of the pillars of modern nanotechnology. An international team led by the Quantum Nano-Optics Group ...

Key tips you should know for making the leap into the world of watts. A power meter is a device fitted to a bike that measures the power output of the rider. Most commonly, power meters use strain ...

The LightGen chip is orders of magnitude more efficient too. But it isn't ready to break out of the lab just yet. As generative AI models grow more powerful, their energy use is becoming a serious ...