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Medical Xpress / Climate worry ties to depression, but hope plus action may ease it

Climate worry is associated with depressive and anxiety symptoms among Finns of all ages. However, these symptoms are less common among individuals whose climate-related hope is combined with various forms of action, such ...

3 hours ago in Psychology & Psychiatry
Phys.org / Natural magnetic materials can control light in unprecedented ways

Imagine shining a flashlight into a material and watching the light bend backward—or in an entirely unexpected direction—as if defying the law of physics. This phenomenon, known as negative refraction, could transform ...

7 hours ago in Physics
Medical Xpress / The 'yo-yo effect' impairs metabolism and reduces brown fat activity in women

A study conducted by researchers at the State University of Campinas (UNICAMP) in São Paulo, Brazil, warns about the impact of the so-called "yo-yo effect" on women's metabolic health. The study shows that women who have ...

Phys.org / Iron catalyst drives asymmetric 1,6 addition of aliphatic Grignard reagents to α,β,γ,δ-unsaturated carbonyl compounds

Scientists at the Institute of Science Tokyo (Science Tokyo) have successfully realized the highly selective asymmetric 1,6 addition of aliphatic Grignard reagents to α,β,γ,δ-unsaturated carbonyl compounds. This new methodology ...

3 hours ago in Chemistry
Medical Xpress / Night owl or early bird? Study finds sleep categories aren't that simple

The familiar labels "night owl" and "early bird," long used in sleep research, don't fully capture the diversity of human internal clocks, a new study has found. The McGill University-led study published in Nature Communications ...

7 hours ago in Neuroscience
Phys.org / Perseverance rover completes first AI-planned drive on Mars

NASA's Perseverance Mars rover has completed the first drives on another world that were planned by artificial intelligence. Executed on Dec. 8 and 10, and led by the agency's Jet Propulsion Laboratory in Southern California, ...

7 hours ago in Astronomy & Space
Phys.org / As Rubin's survey gets underway, simulations suggest it could find about six lunar-origin asteroids per year

Most near-Earth asteroids are thought to drift in from the main asteroid belt. But a small subset may have a much closer origin: the moon. One intriguing example is 469219 Kamoʻoalewa (2016 HO3), an Earth quasi-satellite ...

7 hours ago in Astronomy & Space
Medical Xpress / Eye drops may affect liver cells

A chemical used in some over-the-counter eye drops may affect liver cells and be transformed to a PFAS-like substance. This is according to a new study from Örebro University published in Environment International. "We initiated ...

3 hours ago in Ophthalmology
Phys.org / Poverty intervention program in Bangladesh may reinforce gender gaps, study shows

In Bangladesh, programs targeting ultra-poor, rural households can help families escape extreme poverty. However, the programs may have the unintended consequence of reinforcing gender gaps, a new study from the University ...

3 hours ago in Other Sciences
Medical Xpress / Q&A: A more realistic way to study cocaine use could accelerate addiction research

You may be surprised to learn that, according to AddictionHelp.com, an estimated 12% of American adults (~41 million) have used powder cocaine in their lifetimes. Thankfully, not everyone who partakes develops an addiction, ...

2 hours ago in Medical research
Dialog / Infrared running of gravity offers a field-theoretic route to dark matter phenomena

The mystery of dark matter—unseen, pervasive, and essential in standard cosmology—has loomed over physics for decades. In new research, I explore a different possibility: Rather than postulating new particles, I propose ...

10 hours ago in Astronomy & Space
Medical Xpress / Far fewer cervical cancer screenings are needed for HPV‑vaccinated women, study suggests

In a modeling study of women vaccinated against human papillomavirus (HPV), researchers found that cervical cancer screening could be done far less often than current recommendations without compromising health benefits. ...

3 hours ago in Vaccination