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58 articles from PhysOrg

A new twist on DNA origami: Meta-DNA structures transform the DNA nanotechnology world

A team of scientists from ASU and Shanghai Jiao Tong University (SJTU) led by Hao Yan, ASU's Milton Glick Professor in the School of Molecular Sciences, and director of the ASU Biodesign Institute's Center for Molecular Design and Biomimetics, has just announced the creation of a new type of meta-DNA structures that will open up the fields of optoelectronics (including information storage and...

Acorn woodpeckers wage days-long battles over vacant territories, radio tag data show

When acorn woodpeckers inhabiting high-quality territories die, nearby birds begin a battle royal to win the vacant spot. Researchers used radio tags to understand the immense effort woodpecker warriors expend traveling to and fighting in these dangerous battles. They also found spectator woodpeckers go to great lengths to collect social information, coming from kilometers around just to watch...

Producing leather-like materials from fungi

Traditional leather and its alternatives are typically obtained from animals and synthetic polymers. Leather can be considered a co-product of meat production with both livestock farming and the leather production process increasingly considered to be ethically questionable and environmentally unfriendly (e.g. deforestation for grazing, greenhouse gas emissions, use of hazardous substances in the...

Upside down houses for the dead at Maeshowe

New archaeological research by the University of the Highlands and Islands at the Stone Age tomb, Maeshowe located within the Orkney UNESCO World Heritage Site, has found its side chambers are stylistically upside-down from the main chamber, and therefore proposes they were built as inverted netherworlds specifically for the dead to enter the afterlife.

Ethnic fears eroding democratic attitudes among Republicans, new research finds

Ethnocentric concerns about the growing political power and social influence of immigrants, African Americans and Latinos are undermining Republicans' commitment to long-held democratic norms, according to new research by Vanderbilt University political science professor Larry Bartels. The findings, published Aug. 31 in the research article "Ethnic antagonism erodes Republicans' commitment to...

Researchers find conserved regeneration-responsive enhancers linked to tail regeneration in fish

A team of researchers from Stowers Institute for Medical Research, Howard Hughes Medical Institute and Stanford University has discovered conserved regeneration-responsive enhancers linked to tail regeneration in fish common to two species. In their paper published the journal Science, the group describes their genetic study of two fish species and what they learned about the role of conserved...

Harvard historian examines how textbooks taught white supremacy

Historian Donald Yacovone, an associate at the Hutchins Center for African & African American Research, was researching a book on the legacy of the antislavery movement when he came across some old history school textbooks that stopped him cold—and led him to write a different book.

Efficient removal of steroid hormones from water

Micropollutants contaminate the water worldwide. Among them are steroid hormones that cannot be eliminated efficiently by conventional processes. Researchers of Karlsruhe Institute of Technology (KIT) have now developed an innovative filtration system that combines a polymer membrane with activated carbon. As the size of the carbon particles is very small, it is possible to reach the reference...

A tiny instrument to measure the faintest magnetic fields

Physicists at the University of Basel have developed a minuscule instrument able to detect extremely faint magnetic fields. At the heart of the superconducting quantum interference device are two atomically thin layers of graphene, which the researchers combined with boron nitride. Instruments like this one have applications in areas such as medicine, besides being used to research new materials.

Citizen science: knowing your food's carbon footprint

Sustainable food consumption is considered critical for combatting climate change. Sustainable food choices are thought to be key to reducing the environmental impact of human food consumption, with the food lifecycle contributing 20–30% of global greenhouse gas emissions. Increasing healthy diet choices are also key to improving consumer health by reducing diet-related chronic diseases. It is...