New metamaterial offers reprogrammable properties

Over the past 20 years, scientists have been developing metamaterials, or materials that don’t occur naturally and whose mechanical properties result from their designed structure rather than their chemical composition. They allow researchers to create materials with specific properties and shapes. Metamaterials are still not widely used in everyday objects, but that could soon change. […]

Higher red cell transfusion threshold offers no advantage for treating preterm infants

Very low birthweight infants often need blood transfusions to survive. A National Institutes of Health-funded study suggests that providing a higher threshold of red cells within accepted limits offers no advantage in survival or reduction in neurological impairment over a lower threshold. The research was conducted by Haresh Kirpalani, B.M., of the University of Pennsylvania, […]

New electron microscopy technique offers first look at previously hidden processes

A schematic depiction of virtual electron–positron pairs appearing at random near an electron (at lower left). Credit: RJHall/Wikipedia Northwestern researchers have developed a new microscopy method that allows scientists to see the building blocks of “smart” materials being formed at the nanoscale. The chemical process is set to transform the future of clean water and […]

Gasdermin offers insight into coral necrotic death

IMAGE: Cleavage of GSDME by caspase 3. view more  Credit: IOCAS Pyroptosis is a highly inflammatory form of programmed necrotic cell death that acts as a defense mechanism against the infection of bacterial and viral pathogens. Pyroptosis is executed by gasdermin, a family of pore-forming proteins. Gasdermin-mediated pyroptosis is characterized by rapid cell swelling, membrane disruption, […]

CU Anschutz researcher offers new theory on `Venus’ figurines

AURORA, Colo. (Dec. 1, 2020) – One of world’s earliest examples of art, the enigmatic `Venus’ figurines carved some 30,000 years ago, have intrigued and puzzled scientists for nearly two centuries. Now a researcher from the University of Colorado Anschutz Medical Campus believes he’s gathered enough evidence to solve the mystery behind these curious totems. […]

UCLA study of threatened desert tortoises offers new conservation strategy

In Nevada’s dry Ivanpah Valley, just southeast of Las Vegas, a massive unintended experiment in animal conservation has revealed an unexpected result. From 1997 to 2014, the U.S. Fish and Wildlife Service moved more than 9,100 Mojave desert tortoises to the 100-square-kilometer (about 39 miles square) Large Scale Translocation Site. The newcomers, many of which […]

Study of threatened desert tortoises offers new conservation strategy

Large scale translocation site. Credit: U.S. Fish and Wildlife Service In Nevada’s dry Ivanpah Valley, just southeast of Las Vegas, a massive unintended experiment in animal conservation has revealed an unexpected result. From 1997 to 2014, the U.S. Fish and Wildlife Service moved more than 9,100 Mojave desert tortoises to the 100-square-kilometer (about 39 miles […]