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Phys.org / Counting salmon is a breeze with airborne eDNA

During the annual salmon run last fall, University of Washington researchers pulled salmon DNA out of thin air and used it to estimate the number of fish that passed through the adjacent river. Aden Yincheong Ip, a UW research ...

3 hours ago in Biology
Phys.org / Global bird study reveals declining ecosystem resilience

Human-driven changes to landscapes worldwide are 'thinning out' the ecological services supplied by wild birds, eroding the functions that support stable and resilient ecosystems.

3 hours ago in Biology
Phys.org / Why are shiny colors rare in nature? Artificial flower experiment suggests a visual trade-off

Nature is brimming with color in almost every season. While the majority of colors are matte, some are shiny. Evolutionary biologist Casper van der Kooi wondered why shiny colors are so rare. He researched how bees perceive ...

2 hours ago in Biology
Phys.org / New study reveals spatial patterns of crime rates and media coverage across Chicago

A spatial analysis of crime in Chicago suggests that certain environmental and socioeconomic factors, such as building density, are linked with crime rates, but these relationships differ between neighborhoods. The study ...

2 hours ago in Other Sciences
Phys.org / 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 ...

7 hours ago in Other Sciences
Phys.org / Mini-fridges on a nanoscale? New cooling technique could make computer chips more powerful

As more devices get piled onto computer chips to increase processing power capacity, heat generation becomes increasingly concentrated. This heat must be removed to keep chip performance high, but is currently achieved by ...

3 hours ago in Nanotechnology
Phys.org / Astronomers investigate nearby pulsar with radio telescopes

Using the Large Phased Array (LPA) and the Five-hundred-meter Aperture Spherical radio Telescope (FAST), astronomers from Russia and China have observed a nearby pulsar designated PSR J1951+2837. The new observations, presented ...

6 hours ago in Astronomy & Space
Phys.org / Love hurts: Flashy feathers may put some male pheasant species' lives at risk

The male Lady Amherst's pheasant knows how to put on a show when it comes to attracting mates. As well as elaborate courtship displays, they will unfurl their golden feathers to form a cape around their neck, which can prove ...

6 hours ago in Biology
Medical Xpress / 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.

10 hours ago in Neuroscience
Medical Xpress / 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 ...

7 hours ago in Arthritis & Rheumatism
Phys.org / Ultrafast UV-C laser pulses generated and detected using 2D materials

Scientists have developed a new platform for the generation and detection of ultrashort UV-C laser pulses on femtosecond timescales. This breakthrough could unlock new opportunities for transforming optical wireless communication ...

4 hours ago in Physics
Medical Xpress / Research into zoonotic disease risks requires a One Health approach

A new evidence brief, based on a study by the Juno Evidence Alliance conducted in collaboration with CABI's One Health Hub, has highlighted that a One Health approach is needed in research into zoonotic disease risks around ...