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1,558 articles from PhysOrg

Wastewater sector emits nearly twice as much methane as previously thought

Municipal wastewater treatment plants emit nearly double the amount of methane into the atmosphere than scientists previously believed, according to new research from Princeton University. And since methane warms the planet over 80 times more powerfully than carbon dioxide over 20 years, that could be a big problem.

People spend 1/6th of their lifetimes enhancing their appearance, says study

An international team including HSE researchers has conducted the largest ever cross-cultural study of appearance-enhancing behaviors. They have found that people worldwide spend an average of four hours a day on enhancing their beauty. Caring for one's appearance does not depend on gender, and older people worry as much about looking their best as the young do. The strongest predictor of...

Social media provides space for 'digital cosmopolitanism,' argue researchers

Social media platforms such as Facebook and Twitter have repeatedly been the subject of negative news coverage. As a result, the positive aspects associated with digital platforms have been overlooked. In light of this, a recent study has explored the social media activity of a carefully selected group of individuals who use the microblogging platform Twitter.

Passage of laws preempting local action on transgender rights and race and racism in schools accelerates since 2019

The pace of states using preemption to control local authority has quickened and expanded in the United States around issues related to rights of student athletes who are transgender, and the ways race and racism may be taught in US classrooms, according to new data capturing preemption across 15 domains published today by the Temple University Center for Public Health Law Research with the...

Framework structure with nanoscopic insulation enables components for soft robotics and flexible electronics

Classical robots, such as those used for manufacturing, can lift heavy loads and repeat automated processes precisely. But they are too rigid and bulky for delicate work and interaction with humans. The research field of soft robotics works on the development of robots made of soft, organic materials and flexible technical components. Materials researchers at Kiel University have now developed a...

Defect engineering for advanced electrocatalytic conversion of nitrogen-containing molecules

The nitrogen cycle, one of the most important biochemical cycles in all ecosystems, plays a key role in human survival and development. It describes the interconversion process between elementary nitrogen substances and nitrogen-containing compounds in nature. Undoubtedly, the redox reactions between these nitrogen-containing molecules maintain the balance of the nitrogen cycle. However, over the...

Shark from the Jurassic period was already highly evolved

Cartilaginous fish have changed much more in the course of their evolutionary history than previously believed. Evidence for this thesis has been provided by new fossils of a ray-like shark, Protospinax annectans, which demonstrate that sharks were already highly evolved in the Late Jurassic. This is the result of a recent study by an international research group led by paleobiologist Patrick L....

Japanese scientists take a novel approach to study populations of deep-sea brittle stars

For the first time, researchers develop a metabarcoding technology for brittle stars. Japanese scientists, led by Dr. Masanori Okanishi of the Hiroshima Shudo University and the University of Tokyo, analyzed environmental DNA (eDNA) released from marine invertebrates in the water, and successfully identified the species they were looking for. The study is published in Metabarcoding and...

Better metric for prioritizing conservation of 'evolutionarily distinctive' species

An updated metric for prioritizing species' conservation that incorporates scientific uncertainty and complementarity between species, in addition to extinction risk and evolutionary distinctiveness, has been published on February 28 in the open access journal PLOS Biology, authored by Rikki Gumbs from the Zoological Society of London (ZSL), U.K., and colleagues.

Parental investment may have aided evolution of larger brains

A review of evidence from prior research provides new support for the possibility that the evolution of larger brains in some species was enabled through increased energy investment by parents in their offspring. Carel van Schaik of the Max Planck Institute for Animal Behavior in Konstanz, Germany, and colleagues present their arguments in a paper published on February 28 in the open access...