Science News
Scientists discover new type of lion roar
Live Science - 21 Nov 2025 00:01
Researchers used artificial intelligence to analyze more than 3,000 recordings of African lions and found that the animals have an "intermediate" roar as well as a "full-throated" roar.
Scientists reveal a hidden hormone switch for learning
Science Daily - 21 Nov 2025 23:32
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 hormones activity was blocked. ...
New evidence shows tirzepatide and semaglutide strongly protect the heart
Science Daily - 21 Nov 2025 23:10
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...
Brain Circuit That Forces Behavior Into Repeat Mode Identified
Neuroscience News - 21 Nov 2025 20:59
A new study has identified a specific brain circuit that can push behavior into a compulsive repeat mode, forcing mice to continue digging and sniffing even when rewards are available. The circuit links the nucleus accum...
Genetics Plus Heart Health Markers Sharpen Dementia Risk
Neuroscience News - 21 Nov 2025 19:55
New research shows that dementia risk is best predicted by combining genetic vulnerability with cardiovascular disease markers, revealing a more precise and actionable way to identify who is most likely to develop the co...
Supplement Shows Promise in Blocking Amyloid in Alzheimers
Neuroscience News - 21 Nov 2025 19:03
A new study shows that oral arginine, a naturally occurring amino acid, can significantly suppress amyloid- aggregation in Alzheimers disease models. Researchers found that arginine not only prevented A42 from clumping b...
Scientists find rare tusked whale alive at sea for the first time - and shoot it with a crossbow
Live Science - 21 Nov 2025 18:55
Researchers have identified ginkgo-toothed beaked whales alive at sea for the first time after years of searching, and in doing so solved the mystery of an odd echolocation pulse in the North Pacific.
Early Brain Activity Differences Predict Addiction Risk in Boys vs Girls
Neuroscience News - 21 Nov 2025 18:37
A large-scale analysis of nearly 1,900 children found that those with a family history of substance use disorder show early differences in how their brains transition between activity states, long before any drug exposur...
Is the AI Bubble About to Burst? What to Watch for as the Markets Wobble
Singularity Hub - 21 Nov 2025 18:24
If dazzling potential doesnt translate quickly into steady, profitable demand, the excitement can slip away surprisingly fast. The post Is the AI Bubble About to Burst? What to Watch for as the Markets Wobble appeared fi...
Astronomers may have glimpsed evidence of the biggest stars ever seen
New Scientist - 21 Nov 2025 16:19
The distant universe might be littered with supermassive stars between 1000 and 10,000 times the mass of the sun, which could solve a cosmic mystery about the origins of extremely large black holes
Undersea storms are melting the doomsday glaciers ice shelf
New Scientist - 21 Nov 2025 15:00
Spinning vortices of water trapped under the Thwaites glacier ice shelf account for 20 per cent of the ice melt. Theyre expected to get worse as the world warms
A looming 'insect apocalypse' could endanger global food supplies. Can we stop it before it's too late?
Live Science - 21 Nov 2025 15:00
Insect populations are in steep decline, which could endanger the food supply. But there are things we can do to reverse the trend.
Ancient tracks may record stampede of turtles disturbed by earthquake
New Scientist - 21 Nov 2025 14:00
Around 1000 markings on a slab of rock that was once a seafloor during the Cretaceous period may have been made by sea turtle flippers and swiftly buried by an earthquake
Atoms passing through walls: Quantum tunneling of hydrogen within palladium crystal
Phys.org - 21 Nov 2025 14:00
At low temperatures, hydrogen atoms move less like particles and more like waves. This characteristic enables quantum tunneling, the passage of an atom through a barrier with a higher potential energy than the energy of ...
Switching off AI's ability to lie makes it more likely to claim its conscious, eerie study finds
Live Science - 21 Nov 2025 13:00
Leading AI models from OpenAI, Meta, Anthropic and Google described subjective, self-aware experiences when settings tied to deception and roleplay were turned down.
Symmetry simplifies quantum noise analysis, paving way for better error correction
Phys.org - 21 Nov 2025 12:30
Researchers from the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, and Johns Hopkins University in Baltimore have achieved a breakthrough in quantum noise characterization in quantum systems-a key s...
Quantum computers need classical computing to be truly useful
New Scientist - 21 Nov 2025 12:00
Conventional computing devices will play a crucial role in turning quantum computers into tools with real-world application
We went hiking with the Coros Pace Pro sports watch - It's surprisingly good
Live Science - 21 Nov 2025 12:00
We liked having the Coros Pace Pro as our hiking companion, but we do not think this sports watch will be our go-to option for extreme outdoor explorations.
Simple amino acid supplement greatly reduces Alzheimers damage
Science Daily - 21 Nov 2025 11:33
Researchers discovered that the common amino acid arginine can block harmful A aggregation and reduce its toxic effects in Alzheimers disease models. In flies and mice, oral arginine lowered plaque levels, reduced inflam...
Physicists explore optical launch of hypersound pulses in halide perovskites
Phys.org - 21 Nov 2025 11:20
A German-French team of physicists from TU Dortmund University, University of Würzburg, and Le Mans Université has succeeded in launching shear hypersound pulses with exceptionally large amplitudes in metal halide pero...
A drug already in trials may stop chemotherapy nerve damage
Science Daily - 21 Nov 2025 11:02
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 healthi...
Mysterious galaxy trapped in 'the void' keeps churning out stars without fuel. Scientists are stumped.
Live Science - 21 Nov 2025 11:00
Researchers are puzzled as to how the dwarf galaxy NGC 6789 continues to make new stars, despite being stuck in the gas-famished Local Void.