Researchers have discovered that birds and humans share the same genes to produce speech, with similar brain circuitry involved in singing behavior. The study, led by Duke neuroscientist Erich Jarvis, reveals that vocal learning evolved twice or three times among songbirds, parrots, and hummingbirds.
A global collaboration has sequenced and compared full genomes of 48 bird species, revealing the origins of feathers, flight, song, and sex chromosomes. The study resolves key debates on bird family trees and evolutionary timelines.
A new study finds that climate change may tip the scales in favor of invasive wetland plants, which can outcompete native species due to their natural phenotypic plasticity. As environmental changes occur, invasive species will gain an advantage over native species, potentially reducing biodiversity and ecosystem function.
A new model developed by economists at Duke University and the University of Connecticut helps fishermen boost profits by identifying the most efficient fishing practices and behaviors. The model found that in some cases, congestion can actually increase potential late-season profits and reduce the risk of fishery depletion.
The Federal Resource Management and Ecosystem Services Guidebook provides a consistent approach to accounting for ecosystem services. It enables resource managers to balance human health, wealth, and well-being with natural resource management decisions.
A new study reveals that citizen science projects increase environmental awareness, knowledge, and skills among participants, who often become advocates for conservation efforts.
Scientists have developed a system that can identify chemicals in the atmosphere from up to one kilometer away. The technique uses terahertz radiation and an infrared laser to detect toxic gases, including nerve gas, chemical spills, and industrial pollutants.
Researchers found that blocking angiogenesis can reduce bacterial numbers, limit their spread and increase survival rates in infected lab animals. The study suggests a potential new therapeutic approach targeting the body's response to tuberculosis rather than directly attacking the bacteria.
Research on Tanzanian chimpanzees reveals that the mothers of sons are 25% more social than those of daughters. They spend more time with other adults and associate with more kin, which helps their young males develop social skills. This finding suggests a potential link between early social exposure and gender-typical behavior in humans.
A Duke University study found that job candidates who share the minority partisan view of voters in a geographic district are less likely to receive a callback than those with neutral resumes. Employers appear not to favor majority-partisan views. The study suggests partisanship may play a role in hiring, but further research is needed.
A new Duke University study finds that older adults recruit an additional brain area to remember competing consumer products and choose the better one. The study suggests that this brain activity, involving the ventromedial prefrontal cortex, allows them to perform at a higher level.
A new analysis from a long-term study of over 1,000 New Zealanders found a strong relationship between low credit scores and poor cardiovascular health. The study also suggests that personal attributes such as self-control, planning ahead, and perseverance can predict both better financial status and better health.
Researchers found that males who consistently bully females tend to father more babies with their victims. Long-term aggression, particularly by high-ranking males, increased paternity success.
Cartilage cells have multiple sensory systems that respond to mechanical strain, leading to cell death. Researchers found two ion channels, Piezo1 and Piezo2, that are critical for sensing forceful injury, and a substance from tarantula venom extract can block these channels, preventing cell death.
A new Duke University study finds that people evaluate scientific evidence based on its policy implications, leading to denial of problems even when faced with strong evidence. The study sheds light on why conservatives and liberals disagree so vehemently over issues like climate change.
A mathematical model developed by Duke University researchers shows how changes in North Carolina's congressional voting districts could affect election outcomes. The study found that re-ran elections with tweaked district boundaries resulted in drastically different seat splits, highlighting the need for redistricting reform.
The Law of the Sea Convention permits researchers to track migratory marine animals using bio-logging techniques without advance permission from coastal nations. This allows for essential conservation data to be collected remotely, but can take too long to obtain consent for some nations' waters.
Researchers at Duke University have discovered a key gene that regulates the immune system's transition from high alert to recovery after an infection. The finding, published in PLOS Genetics, highlights the importance of cellular homeostasis in repairing tissue damage and eliminating bacterial toxins.
Scientists developed new geochemical tracers to detect hydraulic fracturing flowback fluids in the environment. The tracers can track the presence of frac fluids and distinguish them from wastewater coming from other sources.
A study published in Cell Reports found that female fruit flies exhibit a preference for acetic acid, or vinegar, when carrying eggs due to sensory neurons detecting stretch in the reproductive tract. This behavior is linked to pregnancy and egg production, challenging previous assumptions about hormonal influences.
Duke University researchers have developed a way to increase the photon emission rate of fluorescent molecules, reaching record levels. This breakthrough has significant implications for ultrafast LEDs and quantum cryptography, enabling secure communication that could not be hacked.
Researchers analyzed Madagascar's lizard, snake, frog, and tortoise populations to understand how biodiversity hotspots come to be. Climate change and land use affect different species differently, with some doing better while others decline.
A Duke University team found that nanoparticles called single-walled carbon nanotubes accumulate rapidly in wetland sediments, potentially harming aquatic food chains. The accumulation of these nanoparticles in sediment poses concerns for both sediment-dwelling organisms and animals that eat them.
A new study published in PeerJ found that pollution in urban and farm runoff in Hawaii causes tumors in endangered sea turtles. The researchers discovered that high levels of nitrogen in the runoff promote the formation of tumors on the animals' eyes, flippers, and internal organs.
Researchers at Duke University found that controlled grazing by goats can reduce phragmites stem density by half in three weeks. The approach also restores native plant species diversity and function, offering a sustainable alternative to chemical herbicides.
A new study by Duke University researchers suggests that water-quality trading programs can significantly lower costs of achieving Clean Water Act goals. By allowing polluters to buy, sell or trade credits, these programs can reduce pollution in river basins and estuaries faster and at a lower cost than requiring facilities to meet com...
Researchers found that low-density neighborhoods are more likely to stay integrated, while high-density areas become segregated. The study uses a mathematical model to simulate the movement of families between neighborhoods and shows that cities can quickly become segregated once a certain density threshold is reached.
A study by researchers from five universities found that contamination in drinking water wells in Pennsylvania and Texas stems from well-integrity problems such as poor casing and cementing. The analysis used noble gas and hydrocarbon tracers to identify the source of fugitive methane and determine if it is natural or not.
A 19-year study found that children who received early interventions for aggressive behavior had fewer convictions for violent crimes, lower rates of serious substance abuse, and fewer psychiatric problems. The program's positive effects held true across four different sites and among both males and females.
Duke University researchers found that stressed cells slow down protein production, reshuffle their workload, and clean up misfolded proteins. This response mechanism could shed light on diseases caused by misfolded proteins.
Scientists have named an extinct swamp-dwelling creature after Mick Jagger due to its oversized lips. The Jaggermeryx naida fossils, found in Egypt's desert, belonged to a family of ancient hoofed animals called anthracotheres.
A long-term study of over 200 wild female baboons found that females who socialized with both males and females lived the longest. Socializing with males gave females a bigger longevity boost than socializing with other females.
Researchers at Duke University have made a surprising discovery about the role of calcium in pain sensation using Caenorhabditis elegans worms. Calcium flow through pain-sensing channels helps worms adapt to repeated painful stimuli by desensitizing them, suggesting a potential survival advantage.
Researchers identified a unique interaction between cyclic-di-GMP and protein BldD, which controls the developmental switch in Streptomyces, turning it into an antibiotic factory. The small molecule assembles into a molecular glue, connecting two copies of BldD to regulate development.
A three-year study across five low- and middle-income countries found that orphaned children in institutions are as healthy as those in family-based care. The type of residential setting was a poor predictor of child well-being, with country, neighborhood, and community being stronger predictors.
Research at Duke University found that the brain's motor cortex influences the auditory cortex, dampening responses to tones when a mouse moves. The study used optogenetics to activate specific neurons and showed that movement stimulates inhibitory neurons, suppressing the response in the auditory cortex.
Researchers at Duke University have identified a gene, called OSCA1, that helps plants sense water availability and adjust their water conservation machinery accordingly. The findings could lead to new ways to help crops thrive when water is scarce.
Researchers have discovered over 30 enzyme-blocking molecules that can curb malaria before symptoms start, targeting the liver stage of the parasite's lifecycle. These protein kinase inhibitors, also used to treat cancer, could diversify the antimalarial arsenal and extend the lifespan of existing drugs.
Researchers at Duke University have uncovered a 'roving detection system' on cell surfaces that may lead to new cancer therapies. The system involves receptors that search for signals to guide cell movement, potentially allowing for the prevention of metastasis and other diseases.
Researchers at Duke University have identified three tree species as environmental hosts for the fungus Cryptococcus gattii, which causes life-threatening lung and brain infections. The study found that these tree species can serve as sources of human infections, particularly for individuals with compromised immune systems.
A new study suggests that exporting US coal to power plants in South Korea could lead to a 21 percent drop in greenhouse gas emissions. However, the economic benefits of such exports would come with increased water use, land degradation, and potential harm to fish and wildlife habitats.
A new study from Duke University found that mass layoffs can trigger increased suicide attempts and behaviors among teenagers, particularly girls and black adolescents. The research, based on a nationally representative survey of 403,457 adolescents, suggests that economic hardship worsens existing tendencies in girls.
Researchers at Duke University have successfully used CRISPR gene-editing to target and destroy two HPV genes responsible for cervical cancer cell growth. By hijacking the bacterial defense system, they were able to selectively kill cancer cells while leaving normal cells intact.
Researchers at Duke University discovered that the host determines which genes are open in the gut, while microbes regulate their usage, indicating a cooperative environment where both parties interact to thrive. This study has significant implications for understanding the intricate relationships between hosts and microbiomes.
A new study by Duke University researchers found that small DNA modifications can affect the brain's threat response. The study focused on the serotonin transporter gene and found a strong link between methylation levels and amygdala reactivity, which may contribute to stress-related disorders.
A new study finds that human skulls changed in ways indicating a lowering of testosterone levels during the time culture was blossoming. The research team argues that human society advanced when people started being nicer to each other, leading to more cultural exchange and cooperation.
A study of dominance in female baboons found that close ties with mom and supportive sisters play a crucial role in determining social status. Females born to high-ranking mothers tend to reach higher ranks, while those with more sisters are more likely to rise within their family group.
Scientists have identified a specific electrical pattern in the brains of genetically identical mice that predicts how well individual animals will fare in stressful situations. This finding may help prevent mental illnesses linked with stress, such as post-traumatic stress disorder and depression.
Researchers found that some microorganisms can use epimutations, a temporary silencing of drug targets, to gain drug resistance without committing to permanent mutations. This flexible mechanism could be employed by various organisms to withstand treatment with different drugs.
A study by Adrian Bejan explains how the constructal law governs the evolution of passenger jets, from small propeller-driven planes to modern behemoths. The analysis provides insights into successful design features and constraints that dictate airplane performance.