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Phys.org / Larger natural diamonds retain per-carat premium over lab-grown stones, analysis finds

Natural diamonds consistently command higher prices per carat than laboratory-grown synthetic diamonds, according to a large-scale analysis of online diamond sales published in the International Journal of Electronic Marketing ...

3 hours ago
Phys.org / Egyptian blue in Iron Age Iran points to ancient connections

Egyptian blue, considered the world's earliest synthetic pigment, was prized for its stable blue hues and served as a common blue paint in Egypt as early as 5,000 years ago, as well as the base material for small items such ...

6 hours ago
Medical Xpress / Detection of optic nerve inflammation enables earlier multiple sclerosis diagnoses

Multiple sclerosis (MS) is the most common chronic autoimmune disease of the central nervous system. An early and accurate diagnosis is crucial for improving the effectiveness of treatment and reducing nerve damage. To standardize ...

5 hours ago
Phys.org / New hurricane graphic helps people identify watch areas, doesn't change risk perception

Hurricane warnings are only effective if people understand them. A new study by Florida State University faculty members in the School of Communication in the College of Communication and Information and the Department of ...

3 hours ago
Tech Xplore / Should people marry AI agents?

The widespread use of conversational platforms such as ChatGPT and Gemini is raising important new ethical, anthropological and legal questions regarding the potential risks, misuses and shortcomings of artificial intelligence ...

10 hours ago
Medical Xpress / Q&A: Lowering radiation dose in chest X-ray imaging yields same accuracy, researcher finds

Digital tomosynthesis (DTS) is an X-ray technique that provides sectional images with better lesion visibility than conventional chest radiography (CXR), while using far less radiation than CT. Masoud Jadidi will defend his ...

3 hours ago
Medical Xpress / Keeping the 'human' in human services

In behavioral health, lived experience is an essential asset for peer supporters—those who use their own experiences to help people feel empowered, supported and hopeful. In a new policy paper published in Psychiatric Services, ...

1 hour ago
Phys.org / Humans have a 'highly abundant' number of stable proteins that are not all predicted by genetic code

In 1968, the American biochemist and geneticist Marshall Nirenberg and his colleagues won the Nobel Prize in physiology or medicine for their work deciphering how an organism's proteins are directly linked to its genetic ...

6 hours ago
Phys.org / Malaysian farmers, environmental groups call for rejection of GMO rice trial

A coalition of farmers, consumer associations and environmental groups is urging Malaysia's National Biosafety Board to reject a proposed field trial of genetically modified rice, warning Tuesday the project could pose risks ...

1 hour ago
Tech Xplore / Blade-coating strategy advances scalable production of high-efficiency perovskite solar cells

Chinese scientists have developed a method that could facilitate the large-scale production of high-efficiency perovskite solar cells. The method employs a multidentate anchoring molecule-assisted co-deposition strategy to ...

3 hours ago
Phys.org / Want a happier marriage? Study suggests one simple habit

Research has long shown that exercise benefits both physical and mental health. Now, a new study from researchers at BYU suggests that it may also strengthen marriages, especially when couples exercise together.

10 hours ago
Phys.org / Sexual role identities among gay and bisexual men vary by age and region

A new study has found that sexual role identities among men who have sex with men vary systematically by age and geographic region.

3 hours ago