New biological marker of early-stage Alzheimer's disease uncovered

Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive memory loss and a decline in mental functions. These symptoms are known to arise from an abnormal buildup of proteins known as amyloid ...

Astronomy

Astronomers find evidence for three subpopulations of merging black holes

Astronomers analyzing gravitational-wave data from the LIGO-Virgo-KAGRA Collaboration have reported that merging binary black holes fall into three distinct categories. The study shows that the three subpopulations have their ...

A nanoscale robotic cleaner can hunt, capture and remove bacteria

Tiny robots—around 50 times smaller than the diameter of a human hair—open up fascinating possibilities: they enable the controlled manipulation of objects far too small for human hands. This brings us closer to a long-standing ...

New drug combination doubles down on Alzheimer's treatments

A new study has found that combining the current medications for Alzheimer's disease with small molecules derived from micronutrients found in grapes, berries, peanuts and turmeric is a safer and more effective way to treat ...

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'Poor man's Majoranas' can be used as quantum spin probes

A Majorana fermion is a particle that would be identical to its antiparticle. Such an object has not yet been found. However, certain solid materials exhibit analogous behavior as if Majorana fermions were present through ...

Artemis crew urges unity on 'lifeboat' Earth

Artemis II astronauts expressed awe on Saturday over their record-setting lunar flyby mission, urging unity on Earth after witnessing the planet's isolation like a "lifeboat" in space.

From bias to balance: How AI can reshape hiring decisions

A study of HR professionals shows inclusion-focused AI can reduce disability discrimination and improve fairness in real-world recruitment scenarios. Artificial intelligence is rapidly reshaping how organizations hire. From ...

AI and drones can select the most resilient wheat

Making wheat more resilient to climate change without compromising yields has become an urgent priority for the agricultural sector. Now, a study led by a research team from the University of Barcelona and the Agrotecnio ...

Two's company: Scientists identify new class of star remnants

In about 5 to 8 billion years, our sun is expected to evolve into a white dwarf—an extremely dense, Earth-sized stellar remnant that has exhausted its fuel and shed its outer layer. But while our sun is a solitary star, research ...

Opening the door to more efficient orbitronic devices

Electrons have three intrinsic properties: spin, charge and orbital angular momentum. Researchers have long studied how to use spin to more efficiently create an electrical current. But the field of orbitronics—which is based ...

Tracking Arctic freshwater flow from space

Arctic rivers wind through remote tundra and boreal forests, freezing solid in winter and surging each spring with snowmelt, eventually emptying into the ocean. Runoff—water that does not soak into the ground but instead ...

Online ad fraud is a feature, not a bug

Technological advancements and the dynamics of the platform economy make rooting out fraud more complicated than it may seem. With print media circulation and broadcast television viewership in free fall, a lot is riding ...

Saturn-mass world discovered orbiting two low-mass stars

Researchers report the discovery of a Saturn-sized exoplanet orbiting two M-dwarf stars, which are smaller and cooler than our sun. The findings from this discovery were published in the The Astronomical Journal and were ...

Planet trapped record heat in 2025: UN

The amount of heat trapped by Earth reached record levels in 2025, with the consequences of such warming feared to last for thousands of years, the UN warned Monday.