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ScienceDaily

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Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution...

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https://www.sciencedaily.com

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Technology → Science

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11,6 položek/den

Tiny Yellowstone quakes ignite a surge of hidden life underground

15:29
Researchers studying Yellowstone’s depths discovered that small earthquakes can recharge underground microbial life. The quakes exposed new rock and fluids, creating bursts of chemical energy that microbes can use. Both the water chemistry and the microbial communities shifted dramatically in response. This dynamic may help explain how life survives in deep, dark environments.

Tiny bee with devil horns discovered in Western Australia

15:29
A horned native bee dubbed Megachile lucifer has been discovered in Western Australia’s Goldfields. Identified while surveying a rare wildflower, the species stood out with its unusual “devilish” facial horns. DNA testing confirmed it was previously unknown. The find exposes major gaps in bee surveying, especially in areas under pressure from mining.

Scientists find a hidden weak spot that may trigger Alzheimer’s

11:13
Scientists have found that a mutation tied to Alzheimer’s disrupts the production and quality of exosomes—tiny cell-made communication packets. Cells with the defective SORLA protein generate fewer exosomes and ones far less able to support nearby brain cells. This weakness may be a key driver of Alzheimer’s development. The research points to new treatment strategies that enhance or restore exos…

Scientists reveal a hidden alarm system inside your cells

11:13
Ribosomes don’t just make proteins—they can sense when something’s wrong. When they collide, they send out stress signals that activate a molecule called ZAK. Researchers uncovered how ZAK recognizes these collisions and turns them into protective responses. The discovery shows how cells quickly spot trouble.

This glowing particle in a laser trap may reveal how lightning begins

8:32
Using a precisely aligned pair of laser beams, scientists can now hold a single aerosol particle in place and monitor how it charges up. The particle’s glow signals each step in its changing electrical state, revealing how electrons are kicked away and how the particle sometimes releases sudden bursts of charge. These behaviors mirror what may be happening inside storm clouds. The technique could…

This tiny plant survived the vacuum of space and still grows

8:32
Moss spores survived an extended stay on the outside of the ISS and remained capable of germinating once back on Earth. Their resilience to vacuum, extreme temperatures, and UV radiation surprised the researchers who expected them to perish. The spores' natural protective coat likely played a key role in shielding them. The study hints at the potential for simple plants to support agriculture bey…

Cocoa and tea may protect your heart from the hidden damage of sitting

8:32
Scientists found that high-flavanol foods can prevent the decline in blood vessel function that occurs after prolonged sitting. Even physically fit men weren’t protected unless they had consumed flavanols beforehand. A cocoa drink rich in these compounds kept arteries functioning normally. Everyday foods like berries, apples, tea, and certain cocoa products could offer a simple way to protect lon…

Europe launches bold plan to harness twisting beams of light

24.listopadu
Europe is investing in a coordinated effort to develop high-power optical vortex technologies and train new specialists in the field. The HiPOVor network unites academia and industry to advance applications ranging from material processing to environmentally friendly photonic systems.

Vegan diet beats Mediterranean for weight loss even with potatoes and grains

24.listopadu
Participants lost more weight on a low-fat vegan diet than on the Mediterranean diet, largely due to eliminating animal foods and reducing oils and nuts. Increased intake of plant foods, even “unhealthy” ones, was strongly associated with greater weight loss.

Scientists find hidden switch that lets tumors shapeshift and evade treatment

24.listopadu
Scientists are uncovering what makes some carcinomas so resistant: their ability to change identity. Two new studies reveal crucial proteins and structures that could become targets for future therapies. These discoveries deepen understanding of how tumors reprogram themselves and point toward highly specific treatments. The work raises hopes for safer, more selective cancer drugs.

Why did ancient people build massive, mysterious mounds in Louisiana?

24.listopadu
Hunter-gatherers at Poverty Point may have built its massive earthworks not under the command of chiefs, but as part of a vast, temporary gathering of egalitarian communities seeking spiritual harmony in a volatile world. New radiocarbon data and reexamined artifacts suggest far-flung travelers met to trade, worship, and participate in rituals designed to appease the forces of nature.

Immune cells use a surprising trick to heal muscle faster

24.listopadu
A research team has found that specific immune cells can connect with muscle fibers in a lightning-fast, neuron-like way to promote healing. These cells deliver quick pulses of calcium, triggering repair within seconds. The mechanism works in both injury and disease models. The discovery could inspire new treatments for muscle recovery and degeneration.

Your brain shows damage before your blood pressure even rises

24.listopadu
Hypertension begins harming the brain surprisingly early, even before measurable blood pressure increases. Key cells related to blood vessels, signaling, and myelin maintenance begin aging prematurely and malfunctioning. These disruptions resemble early patterns seen in cognitive decline and Alzheimer’s. Encouragingly, losartan reversed some of this early damage in mice.

One protein may hold the key to fixing leukemia treatment failure

24.listopadu
Scientists have uncovered how leukemia cells manage to escape one of the most commonly used treatments. Over time, these cancer cells subtly change the shape of their mitochondria to avoid dying when the drug tries to kill them. By identifying the protein that controls this shape-shifting, researchers were able to block it in mice, making the treatment powerful again and dramatically extending su…

Record sargassum piles trap sea turtle hatchlings on Florida beaches

24.listopadu
Sargassum seaweed is creating major new obstacles for sea turtle hatchlings, drastically slowing their crawl to the ocean and increasing their risk from predators and heat. Despite the physical challenge, their energy stores stay stable, suggesting the real danger lies in the delay itself.
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