Researchers identified a mutated gene in budgies that synthesizes the bird's yellow pigments. The findings could be applied to many parrots around the world and shed light on the evolutionary change that led to their brilliant colors.
Neandertal DNA has been linked to various human characteristics, including skin tone, hair color, and sleep patterns. The study suggests that sun exposure plays a crucial role in shaping these traits, with Neandertal genes contributing to lighter or darker skin tones.
Researchers have analyzed DNA of living and dead Lord Howe Island stick insects, confirming their species identity and increasing likelihood of successful reintroduction. The study highlights the importance of museum collections in taxonomic validation.
A fecal transplant from a lean donor can temporarily improve insulin resistance in obese men, but only half of the recipients responded. The success of the treatment depends on each patient's fecal gut-bacterial makeup, which can be predicted through analysis.
Researchers used computational simulations to test the effectiveness of various radical pairs in avian magnetoreception. The results indicate that the current understanding of the radical-pair mechanism cannot explain the disruption of the bird's magnetic compass by certain radiofrequency magnetic fields.
Researchers develop mathematical model that uncovers link between OCD beliefs and actions. People with OCD develop accurate sense of how things work but disregard it when making decisions, leading to second-guessing themselves.
Research found that boys at risk of psychopathy have impaired ability to respond to laughter, with reduced brain activity in regions associated with social affiliation. This suggests they may not experience the world in the same way as peers, leading to different choices and behaviors.
Researchers have developed a wireless sensor and smartphone app that can detect amphetamines in human urine in seconds, with unprecedented sensitivity and low risk of false-positive results. The prototype device is portable enough to be worn as a bracelet and costs around $50 to produce.
Researchers successfully restored consciousness in a 35-year-old man who had been in a vegetative state for 15 years after implanting a vagus nerve stimulator. The study reveals major changes in brain activity and connectivity, suggesting that right intervention can yield changes in consciousness even in severe clinical cases.
A potent gene immunotherapy strategy induces robust immune tolerance in mice with multiple sclerosis, reversing symptoms and stabilizing brain function. The treatment, using a viral vector to deliver myelin sheath protein, protects against disease progression and restores mobility.
Researchers reconstructed African population structure using ancient DNA from 15 individuals, revealing a more complex history than previously thought. The findings show that populations related to indigenous people of southern Africa had a wider distribution in the past, contributing to ancestry of modern-day populations.
Researchers found that neurons fire in both cases of noticing and non-noticing, but differently, supporting a nuanced view of consciousness. The study used brain electrodes to record individual neuron activity in awake patients.
Researchers discovered that saccharin inhibits the activity of bitter taste receptors stimulated by cyclamate, while cyclamate reduces the off-taste elicited by saccharin. This finding provides tools for developing superior sweetener blends and improving their taste in food products.
Researchers have found that electric eels use a clever trick to deliver an intense shock: they leap from the water to target threatening animals above water. This behavior prevents their electrical discharges from weakening as they dissipate through the water, making it a more effective way to deter predators.
Researchers used twin study to investigate role of genes and oral microbiome in cavity formation, finding that dietary and hygiene habits play a significant role. The study also revealed a link between specific bacteria and sugar consumption, with certain species associated with more cavities.
Researchers found that calorie-restricted mice develop thicker, longer fur coats and increased blood vessels to insulate against cold temperatures. This adaptation helps them conserve energy and survive in limited food conditions.
Researchers found that chronic cigarette smoke exposure leads to epigenetic changes in lung cells, silencing protective genes and priming them for cancer. These changes can be reversed by quitting smoking, suggesting a potential strategy for reducing lung cancer risk.
Researchers have found that human papillomavirus 16 (HPV16) infections can have varying levels of cancer risk due to unique genetic variations. Studies revealed thousands of distinct HPV16 genomes in infected individuals, with some variants linked to increased carcinogenic potential.
A phase 1b clinical trial found that combining pembrolizumab with T-VEC resulted in a 62% overall response rate and a complete response rate of one-third in metastatic melanoma patients. The treatment combination worked by transforming cold tumors into hot ones, allowing pembrolizumab to deliver a beneficial enhancement.
Expert John Deutch argues that the US can't lower carbon emissions while growing the economy due to the Kaya Identity model. He suggests planned reductions won't be enough to avoid climate change's impact.
Researchers at the University of Maryland have developed a water-based lithium-ion battery that reaches 4.0 volts and achieves high energy density while maintaining safety. The new gel polymer electrolyte coating prevents water from decomposing and forms a stable interphase, protecting the anode and preventing fires or explosions.
Two independent mouse studies found that ketogenic diets improved memory in older animals and increased their chances of living longer. The diets also preserved physical fitness and altered insulin signaling pathways in the mice. Further research is needed to fully understand the effects of a ketogenic diet on human health and aging.
Researchers discovered a bacterial protein, EroS, that induces mating behavior in single-celled organisms called choanoflagellates. Swarming among these unicellular organisms precedes sexual reproduction, and the protein's enzymatic function is responsible for this change.
A 1°C warming of the Antarctic Ocean led to a single pioneer species dominating the community, driving a reduction in overall species diversity and evenness. Marine organisms also responded with increased growth rates, particularly in warmer months.
A decline in navigational skills could be an early sign of Alzheimer's disease, according to researchers. Researchers are exploring the possibility of using navigational impairments as a diagnostic tool for neurodegenerative diseases.
A study in monkeys reveals that two distinct brain areas, the orbital frontal cortex and ventrolateral prefrontal cortex, are involved in decision-making. The researchers found that monkeys with lesions in one area had impaired ability to track probability, while those with lesions in the other area showed a preference for rewards.
Researchers found that vibrato-like frequency modulation improves the detection of formants, key acoustic components encoding animal size and identity. This mechanism has independently evolved in six mammalian orders, suggesting its importance for transmitting information about an individual's size and identity through calls.
The study outlines infrastructure changes for 139 countries to transition to 100% renewable energy, reducing energy consumption, air pollution deaths, and creating jobs. The roadmap aims to avoid global warming and create energy self-sufficient countries.
Researchers suggest that plant hormones produced by plants can be synthesized by gut microbes, influencing inflammatory diseases. Consuming ABA-rich fruits and vegetables may help alleviate aspects of diabetes.
Migratory Eurasian reed warblers rely on changes in magnetic declination to guide them along the east-west axis, solving a challenging navigational problem. The birds learn to recognize large-scale spatial patterns of declination gradients during their annual movements.
Researchers have developed a novel blood biopsy test that reads platelets to detect human lung cancer with high accuracy. The thromboSeq test analyzes tumor RNA absorbed by circulating platelets and has shown promising results in diagnosing non-small cell lung cancer, achieving up to 90% accuracy.
Researchers found that seasnakes living in polluted areas have darker skin, which helps them bind and rid their bodies of contaminants. This is an example of industrial melanism, where dark-colored varieties thrive in industrial environments.
Researchers used CRISPR to manipulate ant eggs, resulting in germline changes that affect every cell in the adult colony. The study found that knocking out the orco gene affected olfaction, social behavior, and brain anatomy, providing insights into gene regulation and its impact on complex biological systems.
Researchers have developed bendable batteries that can run on biocompatible liquids like normal IV saline solution and cell-culture medium, outperforming most wearable lithium-ion batteries in charge-holding capacity and power output. The batteries' design also enables potential biomedical applications, such as consuming essential oxyg...
Researchers in Japan and China create a way to isolate solid carbon dust from gaseous carbon dioxide, yielding a promising approach to fix carbon in a stable form. The method also shows potential for treating atmospheric CO2 and scrubbing other harmful gases.
The researchers created prototypes of conductive glass with metal ions that spread out over the surface, blocking light in response to electrical current. This technology has the potential to transform homes, businesses, cars, and more by reducing energy consumption and costs.
A study found that a single injection of the longevity hormone klotho fragment improved spatial and working memory, strengthened neuron connections, and countered cognitive deficits in mice. The treatment lasted for several weeks and showed promise as a potential therapy for neurodegenerative diseases.
Engineered skin grafts from stem cells can regulate blood glucose levels and reverse insulin resistance in diabetic mice. The approach, using CRISPR gene editing, has shown promise for potential long-term treatment of human patients with diabetes.
A newly discovered armored dinosaur genus exhibits countershading, suggesting it faced predation stress from meat-eating dinosaurs. The 18-foot-long Borealopelta markmitchelli had reddish-brown-pigmented skin with countershading across its body.
The study found that brain activity in regions called the default mode network represent a kind of higher-level processing, building up representations of what's happening in the world around us. Participants who had previously watched the 'Sherlock' episode could anticipate events and recall them in the same order, suggesting that chu...
A genetic variant at chromosome 6p24 is associated with five vascular diseases, including coronary artery disease and hypertension. The variant enhances the activity of endothelin-1 gene, promoting vasoconstriction and hardening of arteries.
Researchers are developing crops that use RNA interference to block protein translation in target pests, providing a subtle yet effective method of pest control. The technology has the potential to reduce or eliminate the need for chemical pesticides and address environmental and human toxicity concerns.
Researchers sequenced ancient Canaanite genomes, finding that the people living in modern-day Lebanon are likely direct descendants of the Canaanites. The study also suggests substantial genetic continuity in the region since the Bronze Age, agreeing with archaeological records.
Scientists suspect sleep apnea diminishes healthspan due to its link with age-related diseases, including non-alcoholic liver disease and Alzheimer's, prompting researchers to explore treatment options.
The MIT Hacking Medicine model emphasizes collaboration, design thinking, and user feedback to address healthcare issues. The program has launched numerous successful ventures and raised over $100 million in venture funding.
Researchers highlight the crucial role of outreach and education in disease elimination programs. In Thailand's successful liver fluke control model, educational efforts, including comics and songs, have led to significant reductions in human infection rates. The campaign's focus on community empowerment and addressing social factors h...
Researchers found that northern elephant seal males use the memory of rhythmic patterns to identify rival calls, distinguishing between subtle changes in tempo and tone. This ability is crucial for their survival, allowing them to choose strategies in mating and territorial battles.
A team of researchers has created behavior anatomy maps in fruit flies to understand how specific brain circuits generate aggression, wing extension, or grooming behaviors. The data will help neurobiologists assign behaviors to neurons and study brain circuits.
Researchers found that Corynebacterium mastitidis lives on the eyes of laboratory mice and helps them fend off pathogenic microbes. The bacteria stimulates a local immune response, keeping it under control while preventing harmful infection.
Rats without a certain glutamate receptor are less likely to seek out cocaine when it's difficult to obtain, but more likely to consume it when it's freely available. This suggests that the receptor plays a role in modulating reward-seeking behavior associated with drug addiction.