Earth
Working with colleagues from Germany and the US, researchers at Leipzig University have achieved a breakthrough in research into how cancer cells spread. In experiments, the team of biophysicists led by Professor Josef Alfons Käs, Steffen Grosser and Jürgen Lippoldt demonstrated for the first time how cells deform in order to move in dense tumour tissues and squeeze past neighbouring cells. The researchers found that motile cells work together to fluidise tumour tissue.
Hip dysplasia is a developmental disorder common in most dog breeds, and its onset is affected by both hereditary and environmental factors.
Prior studies have identified dozens of genetic loci associated with hip dysplasia in various breeds. The relevance of the loci to disease susceptibility remains an open question. The previously identified loci were reinvestigated at the University of Helsinki, Finland, using a large independent cohort of 1,600 dogs representing ten breeds.
As investors set their sights on the mineral resources of the deep seabed, the International Seabed Authority (ISA) is developing regulations that will govern their future exploration and possible exploitation. A new IASS Policy Brief, published in cooperation with the Federal Environment Agency (UBA), presents three recommendations to ensure that future deep seabed mining would be to the common benefit all humankind, as required by international law.
The mechanism that keeps arterial blood pressure stable in black and white tegu lizards (Salvator merianae) even as their body temperature varies substantially is more efficient at lower than higher external temperatures, contrary to what has always been believed, and vascular regulation plays a key role in pressure adjustments, according to an article published in PLOS ONE by researchers at the Federal University of São Carlos (UFSCar) in the state of São Paulo, B
ORLANDO, Feb. 18, 2021 - University of Central Florida researchers are homing in on the cause of a major disease of sea turtles, with some of their latest findings implicating saltwater leeches as a possible factor.
The disease, known as fibropapillomatosis, or FP, causes sea turtles to develop tumors on their bodies, which can limit their mobility and also their health by interfering with their ability to catch and eat prey.
As climate change takes hold across the Americas, some areas will get wetter, and others will get hotter and drier. A new study of the yellow warbler, a widespread migratory songbird, shows that individuals have the same climatic preferences across their migratory range. The work is published Feb. 17 in Ecology Letters.
NEW YORK, NY (Feb. 18, 2021)--A new study from Columbia University Vagelos College of Physicians and Surgeons has found that suicide mortality can be reduced by a Federally coordinated approach employing scientifically proven options.
Columbia researchers J. John Mann, MD, Christina A. Michel, MA, and Randy P. Auerbach, PhD, conducted a systematic review, determining which suicide prevention strategies work and are scalable to national levels.
Acres of asphalt parking lots, unshaded roads, dense apartment complexes and neighborhoods with few parks have taken their toll on the poor. As climate change accelerates, low-income districts in the Southwestern United States are 4 to 7 degrees hotter in Fahrenheit -- on average -- than wealthy neighborhoods in the same metro regions, University of California, Davis, researchers have found in a new analysis.
When falling in love, humans often pay attention to looks. Many non-human animals also choose a sexual partner based on appearance. Male birds may sport flashy feathers to attract females, lionesses prefer lions with thicker manes and colorful male guppies with large spots attract the most females. But bats are active in the dark. How do they attract mates? Mariana Muñoz-Romo, a senior Latin American postdoctoral fellow at the Smithsonian Tropical Research Institute (STRI) and National Geographic explorer, pioneers research to understand the role of odors in bat mating behavior.
Some songbirds are not dissuaded by constant, loud noise emitted by natural gas pipeline compressors and will establish nests nearby. The number of eggs they lay is unaffected by the din, but their reproductive success ultimately is diminished.
That's the conclusion of a team of Penn State researchers who conducted an innovative, elaborate study that included unceasing playback of recorded compressor noise, 80 new, never-before-used nest boxes occupied by Eastern bluebirds and tree swallows, and behavioral observations with video cameras placed within boxes.
A study of over 1,700 U.S. young people exposed to four major hurricanes found that just a few of them reported chronic stress, and the trajectories among most youth reflected recovery or low-decreasing post-traumatic stress (PTS) symptoms, according to research recently published in JAMA Network Open.
Ancient alchemists dreamed of transforming base materials like lead into gold and other valuable commodities. While such efforts generally came to naught, researchers today are having some success in extracting a variety of useful products like aviation fuels, lubricants, solvents, food additives and plastics from organic waste.
The trick is accomplished with the aid of specialized bacteria, whose metabolic activities can convert simpler chemicals into useful products through a microbial growth process knows as chain elongation.
A short-lived resurgence in the emission of ozone depleting pollutants in eastern China will not significantly delay the recovery of Earth's protective "sunscreen" layer, according to new research published Feb. 10 in Nature.
A study published in Environmental Toxicology and Chemistry has found long-term impacts of the 2010 Deepwater Horizon oil spill in the northern Gulf of Mexico on bottlenose dolphins' immune function.
Bottlenose dolphins from an area that received prolonged and heavy oiling were temporarily captured, sampled, and released as part of health assessment programs. The animals were compared with dolphins from an area where no oil was observed.
DURHAM, N.C. -- A new pair of studies from a Duke research team's long-term work in New Zealand make the case that mental health struggles in early life can lead to poorer physical health and advanced aging in adulthood.
But because mental health problems peak early in life and can be identified, the researchers say that more investment in prompt mental health care could be used to prevent later diseases and lower societal healthcare costs.