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Diagnostic dilemma: A man's sudden fainting episodes landed him in the hospital — and a hair dye was to blame
Science News

Diagnostic dilemma: A man's sudden fainting episodes landed him in the hospital — and a hair dye was to blame

The patient: A 61-year-old man in IndiaThe symptoms: The man went to an emergency department after fainting. He had felt nauseous just before the episode, which lasted about three minutes and was followed by a second fainting episode lasting about two minutes. He also had swelling around one eye. His family told doctors that he hadn't shown any jerking movements, loss of bladder control or subsequent grogginess, which would have been telltale signs of a seizure.What happened next: Because the man had fainted twice and had a history of heart disease, doctors first looked for problems affecting his brain and heart. An MRI of his brain, used to look for structural abnormalities that could expla...

📅 2026-09-16 10:00:00    •    Live Science
New laptop ditches noisy fans and heat sinks for tiny 'cooling chips' — it's much thinner and lighter than you'd expect
Science News

New laptop ditches noisy fans and heat sinks for tiny 'cooling chips' — it's much thinner and lighter than you'd expect

BERLIN — Lenovo has unveiled a concept laptop that uses high-speed air to silently cool its processor, instead of conventional fans or heat sinks. The new system is powered by a tiny computer chip that can fit between your fingers.The new laptop, called AeroBlade, is fitted with four low-power cooling chips that are both "solid-state," meaning there are no moving parts, and "active" — they use a deliberate cooling mechanism — as opposed to relying on passive thermal energy transfer. The cooling chips contain tiny membranes that vibrate at ultrasonic frequencies to create 2,000 pascals of back pressure, forcing ambient air through tiny internal jets onto a copper base layer at speeds of aroun...

📅 2026-09-16 09:40:00    •    Live Science
James Webb reveals Chariklo’s mysterious rings are changing faster than expected
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James Webb reveals Chariklo’s mysterious rings are changing faster than expected

The James Webb Space Telescope has revealed surprising changes in the rings around Chariklo, a small object orbiting between Saturn and Uranus. Over just a few years, its inner ring became more opaque while its outer ring became less opaque. The results suggest that rings around small Solar System bodies may be much more dynamic than scientists previously believed. What is causing the changes remains a mystery.

📅 2026-09-16 03:51:58    •    ScienceDaily
Ultra-processed foods linked to hidden muscle fat that may threaten your knees
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Ultra-processed foods linked to hidden muscle fat that may threaten your knees

Eating more ultra-processed foods was linked to greater fat buildup inside thigh muscles, according to MRI scans of 615 adults at risk for knee osteoarthritis. Surprisingly, the association remained even after researchers accounted for calorie intake, physical activity, and other factors. Fatty changes in these muscles may weaken support around the knee and potentially increase osteoarthritis risk.

📅 2026-09-16 03:00:57    •    ScienceDaily
Scientists find a hidden retinal defense against vision loss
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Scientists find a hidden retinal defense against vision loss

A naturally occurring molecule called erucamide may help the retina fight back against diseases that cause progressive vision loss. Restoring the molecule activated protective immune responses that helped stabilize retinal tissue and slow aspects of degeneration in preclinical models.

📅 2026-09-16 02:37:01    •    ScienceDaily
Scientists reversed biological age in older adults in just 4 weeks
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Scientists reversed biological age in older adults in just 4 weeks

Older adults who changed the balance of fat, carbohydrates, and animal protein in their diets showed signs of reduced biological age after just four weeks. The strongest result appeared in participants eating an omnivorous, lower-fat, higher-carbohydrate diet.

📅 2026-09-16 01:35:54    •    ScienceDaily
Strange 'centaur' object between Saturn and Uranus has mysterious, changing rings, James Webb telescope study hints
Science News

Strange 'centaur' object between Saturn and Uranus has mysterious, changing rings, James Webb telescope study hints

The rings around a strange small body orbiting between Saturn and Uranus look mysteriously different from previous views, new observations from the James Webb Space Telescope (JWST) suggest.The rings encircle Chariklo, which is a centaur, a strange type of object that shows characteristics of both asteroids and comets. Chariklo is only about 400 miles (250 kilometers) in diameter and is part of a large group of tiny objects in the distant solar system.Scientists first discovered Chariklo's rings in 2013 — making it the first small solar system body found to have rings — and studied them with ground-based telescopes again in 2014 and 2017. When JWST took another look at Chariklo in 2022, a de...

📅 2026-09-15 21:01:34    •    Live Science
We're not about to awaken an evil digital god — AI is far more likely to end in a great disappointment
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We're not about to awaken an evil digital god — AI is far more likely to end in a great disappointment

A gift from Live Science ProThis is a Live Science Pro article that we're putting out for free. If you liked this story, please consider subscribing.Artificial intelligence (AI) terrifies us partly because it is new and partly because it is disturbingly familiar. We have invented machines that converse, flatter, argue and improvise with uncanny fluency. Confronted by this synthetic reflection, we behave like early humans seeing a mirror for the first time: We project consciousness behind the glass, then populate it with our expected behaviors, emotions, hopes and nightmares. In other words, we scare ourselves. Today's frontier models are impressively good at writing, coding and math. Yet the...

📅 2026-09-15 20:39:00    •    Live Science
What even is an AI kill switch?
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What even is an AI kill switch?

Amid renewed calls to slow frontier AI, experts are considering what an emergency stop would entail—and who would decide when to use it

📅 2026-09-15 20:30:00    •    Scientific American
Are you worried about the US deploying weapons in space?
Science News

Are you worried about the US deploying weapons in space?

Related storiesWhy is it still so hard to make nuclear weapons?'The greatest unknown was how much energy would be released by the weapon': How scientists prepared for the Trinity nuclear testWhat stops nuclear weapons from accidentally detonating?For years, the idea of nuclear weapons in space sounded more like science fiction than a realistic threat. That changed Monday (Sept. 14), when U.S. Air Force Secretary Troy Meink announced at the Air, Space and Cyber Conference in Maryland that the U.S. had deployed "on-orbit space control weapons capable of defending the Joint Force against hostile adversary action."While the officials have not said that these weapons are nuclear, the announcement...

📅 2026-09-15 20:29:46    •    Live Science