Archaeology

The collapse of Maya civilization: Drought doesn't explain everything

Between 750 and 900 CE, the population of the Maya lowlands in Central America experienced a major demographic and political decline which, according to the scientific literature, coincided with repeated episodes of intense ...

Optics & Photonics

OLEDs can now switch light's handedness with an electrical signal

Researchers from the University of Oxford have for the first time discovered an approach to electrically switch organic LEDs (OLEDs) to emit either left- or right-handed circularly polarized light without changing the light-emitting ...

Why certain arthritis drugs don't work in rheumatoid arthritis

Cedars-Sinai investigators may have figured out why certain immunosuppressive treatments don't work well in rheumatoid arthritis. In a study published in Science Immunology, scientists trace the problem to specific changes ...

New study shows why some minds can't switch off at night

Australian researchers have found compelling evidence that insomnia may be linked to disruptions in the brain's natural 24-hour rhythm of mental activity, shedding light on why some people struggle to "switch off" at night.

New mutation hotspot discovered in human genome

Researchers have discovered new regions of the human genome particularly vulnerable to mutations. These altered stretches of DNA can be passed down to future generations and are important for how we study genetics and disease.

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Medical Xpress

Diseases, Conditions, Syndromes
Have a sore throat? Three things you should know
Diseases, Conditions, Syndromes
Fighting Crohn's with algae—can it heal the gut?

Tech Xplore

Soft hybrid material turns motion into power—without toxic lead

Scientists have developed a new material that converts motion into electricity (piezoelectricity) with greater efficiency and without using toxic lead—paving the way for a new generation of devices that we use in everyday ...

Alternative sweetener sorbitol linked to liver disease

Sweeteners such as aspartame, found in Equal packets, sucralose (Splenda), or sugar alcohols are often seen as healthier alternatives to food with refined sugar (glucose). But that assumption is being challenged with new ...

Puzzling ultraviolet radiation in the birthplaces of stars

Researchers used the MIRI instrument onboard the James Webb Space Telescope (JWST) to identify the presence of ultraviolet radiation in five young stars in the Ophiuchus region, and to understand its role in the formation ...

Q&A: The paradox of extremist families

Ph.D. candidate Layla van Wieringen examined how extremist beliefs are passed on within households. In her dissertation "Rotten Trees, Bad Apples? Understanding the Intergenerational Transmission of Extremism," she reveals ...

NASA's Roman Observatory passes spate of key tests

NASA's nearly complete Nancy Grace Roman Space Telescope has made another set of critical strides toward launch. This fall, the outer portion passed two tests—a shake test and an intense sound blast—to ensure its successful ...

The economic benefits of migration for host countries

When migration is in the news, it is often cast in negative terms, but it has many benefits for host countries, from economic growth to critical support for systems like Social Security that support aging populations. That's ...

Eruption of long-dormant Ethiopian volcano subsides

Volcanic activity in northern Ethiopia's long-dormant Hayli Gubbi volcano subsided Tuesday, days after an eruption that left a trail of destruction in nearby villages and caused flight cancellations after ash plumes disrupted ...