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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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The surprising reason bees replace their queens

18:25
Worker bees stage coordinated revolts when viral infections weaken their queen and lower her pheromone output. This disruption drives many of the queen failures that beekeepers struggle with today. Field trials show that synthetic pheromone blends can prevent untimely supersedure, opening a path to more stable hive management.

New nasal nanodrops wipe out brain tumors in mice

18:25
A new nasal-delivered nanotherapy shows promise against aggressive glioblastoma tumors. By activating the STING immune pathway using gold-core spherical nucleic acids, researchers were able to reach the brain without invasive surgery. When paired with drugs that boost T-cell activity, the treatment eliminated tumors in mice and built long-lasting immunity. The results suggest a powerful new direc…

AI detects a secret lion roar no one knew existed

18:25
Scientists have uncovered a surprising second type of lion roar, using AI to decode vocal signatures with remarkable precision. This breakthrough sheds new light on how lions communicate and offers a powerful new tool for conservationists racing to protect shrinking populations.

Hidden copper switch supercharges green ammonia production

18:25
Researchers discovered that copper oxide catalysts form metallic copper mid-reaction, triggering a dramatic boost in ammonia output. The insight offers a roadmap for designing cleaner, more efficient ammonia-production technologies.

Our Solar System is racing through space 3x faster than we thought

18:25
New measurements of radio galaxies reveal that the solar system is racing through the universe at over three times the speed predicted by standard cosmology. Using highly sensitive data from multiple radio telescope arrays, researchers uncovered a surprisingly strong dipole pattern—one that challenges longstanding assumptions about how matter is distributed across cosmic scales. The results echo …

Stem cell therapy helps AMD patients see again

18:25
A first-of-its-kind trial is testing adult stem cell transplants for advanced dry macular degeneration. Early results show the treatment is safe and can significantly improve vision, even in severely affected patients. Participants gained measurable sight improvements in the treated eye. Researchers are now monitoring higher-dose groups as the therapy advances toward later trial phases.

The five great forests that keep North America’s birds alive

18:25
Migratory birds that fill North American forests with spring songs depend on Central America’s Five Great Forests far more than most people realize. New research shows these tropical strongholds shelter enormous shares of species like Wood Thrushes, Cerulean Warblers, and Golden-winged Warblers—many of which are rapidly declining. Yet these forests are disappearing at an alarming pace due to ille…

Fossils reveal a massive shark that ruled Australia in dinosaur times

11:40
Around 115 million years ago, northern Australia’s seas hosted a colossal shark that rewrites what we thought we knew about early ocean predators. New fossil discoveries show that modern-type sharks were experimenting with gigantic sizes far earlier than scientists believed, competing with the marine “monsters” of the dinosaur age.

Rapid fault healing could rewrite earthquake physics

11:40
Scientists discovered that deep earthquake faults can heal far faster than expected, sometimes within hours. Slow slip events in Cascadia reveal repeated fault movements that only make sense if the fault quickly regains strength. Lab experiments show that mineral grains can weld together under intense heat and pressure, acting like a natural glue. This rapid cohesion may be a missing factor in ea…

Just a few cigarettes a day can damage your heart for decades

11:40
People who smoke only a couple of cigarettes a day still face surprisingly high risks of heart problems and early death. A large review of long-term studies shows that even very light smokers can see their risk of heart failure climb sharply. While quitting leads to major health improvements, some risk remains for decades. The safest approach is quitting entirely, especially at younger ages.

The mystery of volcanoes that don’t explode finally has an answer

11:40
Scientists have uncovered a long-missing piece of the volcanic puzzle: rising magma doesn’t just form explosive gas bubbles when pressure drops—it can do so simply by being sheared and “kneaded” inside a volcano’s conduit. These shear forces can trigger early bubble growth, create escape channels for gas, and sometimes turn potentially catastrophic magmas into surprisingly gentle lava flows.

New evidence shows tirzepatide and semaglutide strongly protect the heart

9:29
A massive real-world study comparing tirzepatide and semaglutide reveals both drugs deliver strong, early cardiovascular protection—reducing heart attack, stroke, and death in adults with type 2 diabetes. While companies have claimed large differences favoring their own medications, researchers found only modest distinctions between the two blockbuster GLP-1 drugs.

Scientists reveal a hidden hormone switch for learning

9:29
Researchers uncovered how estrogen subtly reshapes learning by strengthening dopamine reward signals in the brain. Rats learned faster when estrogen levels were high and struggled when the hormone’s activity was blocked. The findings help explain how hormonal cycles influence cognitive performance and psychiatric symptoms. This connection offers a new path for understanding brain disorders tied t…

Simple amino acid supplement greatly reduces Alzheimer’s damage

9:29
Researchers discovered that the common amino acid arginine can block harmful Aβ aggregation and reduce its toxic effects in Alzheimer’s disease models. In flies and mice, oral arginine lowered plaque levels, reduced inflammation, and improved behavior. Its strong safety record and low cost make it a promising repurposing candidate. The findings hint at a surprisingly simple path toward more acces…

A drug already in trials may stop chemotherapy nerve damage

9:29
Researchers discovered that chemotherapy can accidentally trigger a stress alarm in immune cells, causing inflammation that damages nerves. Blocking this alarm protected mice from nerve pain and kept their nerves healthier. A drug already being tested for cancer may help do the same in people. Early blood tests suggest it may even be possible to predict who will develop these symptoms before they…
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