Some molecules come in two "handed" forms. This property, called chirality, can influence not only how molecules interact with light but also which electron spins they allow to pass. Researchers at the University of Osaka have developed novel chiral hole-transport materials that shed new light on this unusual effect while also improving the interfaces of perovskite solar cells.
Farmers and foresters manage around 80% of Germany's land area. They are therefore key agents of change in protecting biodiversity—and are often accused of not doing enough to protect it.
The COVID vaccine is perhaps the first thing many people think of when they hear about mRNA-based drugs. Small packages of genetic material are sent into the body, prompting cells to produce useful proteins in the fight against the virus. But the list of diseases that can potentially be treated with mRNA-based drugs is much broader than vaccines. mRNA is expected to be used to treat disorders including cardiovascular diseases, rare hereditary diseases and autoimmune diseases—and not least, cancer.
Candida auris and Candida albicans are microscopic fungi that cause life-threatening human infections, killing almost a million people globally every year. The World Health Organization lists both species among the top four most concerning fungal pathogens in existence, and while relatively uncommon in Australia, growing outbreaks in Europe and the United States have forced restrictions and even closures of intensive care units.
More than 150 people are dead and hundreds more are missing after an enormous wave of water, ice, mud and rock cascaded more than 170 kilometers (106 miles) down the Bhote Koshi River valley in Nepal. The valley is the main link between Kathmandu in Nepal and Lhasa in Tibet. At least 34 Australians are missing. There was little warning.
Why do we remember certain moments while forgetting others? Every day, our minds are bombarded with thousands of pieces of information, yet our brains have a limited capacity to consolidate these experiences into lasting memories. This means we need a way to hold on to what is most important and disregard irrelevant details.
Why do humans rely on XY chromosomes to determine sex, while birds use ZW—and many reptiles use neither, letting temperature decide instead? Sex determination is remarkably diverse across the animal kingdom. In genotypic sex determination (GSD), sex is encoded in the genome: XX individuals are female and XY males in humans and most mammals, while in the ZW system, found in birds and some reptiles, males are ZZ and females ZW.
As an El Niño of historic proportions is taking shape in the tropical Pacific, a University of Michigan study has found that El Niño events have become nearly 40% stronger in the last 40 years than they were in the preindustrial era.
New research by SUNY Polytechnic Institute (SUNY Poly) Assistant Professor of Biology Dr. Margarita Orlova is providing new insight into how bumblebee queens communicate through chemical signals and how those signals change throughout their lives.
The genome—which contains genes encoded in DNA—acts as the fundamental blueprint of life. But what you might not know is that, in addition to this genetic information, we have something akin to an "instruction manual" for how genes should be handled. This instruction manual is known as the epigenome.
