Researchers found that mouse sperm from promiscuous species can discriminate between closely related and unrelated sperm, clustering together to swim faster. This cooperative behavior is driven by competition among males and may be widespread among 95% of mammals.
Researchers found anti-inflammatory agents that increase wakefulness during the day and affect normal sleep/wake cycles. The study suggests a shared neurochemistry between zebrafish and mammals, paving the way for new compounds to regulate sleep and wakefulness in humans.
Climate scientists suggest that Himalayan heat and moisture are crucial for the South Asian monsoon. The research implies that changes in land use over the Indian subcontinent could influence albedo and moisture levels.
Research suggests that certain adaptations that once benefited humans may now be helping such ailments persist in spite of advancements in modern culture and medicine. Evolutionary perspectives integrated into medical curricula could help future physicians understand health problems from an evolutionary perspective.
Scientists at Harvard University used a quantum computer to calculate the precise energy of molecular hydrogen, solving a long-standing problem in theoretical chemistry. This achievement has significant implications for fields like cryptography and materials science.
A study published in Neuron has shown that the correlated neural tuning to position and velocity is present in the neural learning elements responsible for motor learning. This finding could lead to the development of rehabilitation protocols that encourage patients to use an affected limb more, potentially improving recovery rates.
Researchers at Harvard University developed an all-optical technique to measure how neurons excite or inhibit each other. The study successfully mapped the interplay of four neurons, revealing that multiple neurons can influence their neighbors' activity.
Researchers from Harvard and MIT demonstrate a new method to build better artificial visual systems by combining genetic screening techniques with high-performance gaming hardware. The approach enables the analysis of thousands of candidate models in parallel, resulting in significant improvements over traditional methods.
Researchers from Harvard University and their international team have developed compact, multibeam lasers that can emit multiple wavelengths in the infrared spectrum. This adaptable technology has potential use in applications such as remote chemical sensing, optical wireless, and interferometry.
A new cancer vaccine has successfully eliminated tumors in mice by reprogramming the mammalian immune system. The implant-based vaccine targets tumor-specific antigens and directs T cells to hunt down and kill cancerous cells, providing durable protection against relapse.
Researchers at Harvard University used an analog model and mathematical simulations to understand how a long leaf is formed. They found that elastic strain resulting from differential growth leads to the elegant arc and serrated surface of leaves like the plantain lily.
A team of researchers from Harvard University discovered that army ant colonies can be cooperative instead of combative when they lose their queen. The lost workers are absorbed by neighboring colonies and integrate quickly, often losing their distinct colony odor within days.
Researchers have created a new colloidial fluid model that mimics the behavior of glasses, including common window glass and sugars like honey. The improved model uses soft particles to delay solidification, resulting in a more glass-like behavior.
Researchers have developed a quantum gas microscope that allows them to observe single atoms at extremely low temperatures, exhibiting bizarre behavior. The device enables the study of novel quantum materials and simulations of condensed matter systems.
A study published in Archives of Sexual Behavior found that gay men are most attracted to the most masculine-faced men, while straight men prefer the most feminine-faced women. This suggests that regardless of sexual orientation, men's brains are wired for attraction to sexually dimorphic faces.
Researchers at Harvard University found that similar molecular changes turned a harmless digestive enzyme into a toxin in two unrelated species, a shrew and a lizard. The study suggests that protein adaptation may be a highly predictable process, potentially leading to the discovery of other toxins across various species.
A study by Harvard researchers found that torture can lead to the perception of guilt in innocent individuals. Participants who witnessed torture and saw the victim's pain rated them as more guilty, while those who were distant from the torture sympathized with the suffering and saw them as less guilty.
Scientists at Harvard University have introduced kinks into arrow-straight nanowires, creating zigzagging 2-D and 3-D structures with enhanced electrical properties. These new nanostructures enable the integration of active devices, fostering potential breakthroughs in biomedicine and electronics.
Researchers argue that everyday life, not just healthcare, affects population health and public health initiatives' success. Studies find that cultural frameworks and institutional practices shape health outcomes.
The human genome is organized into two separate compartments, with active genes separated from inactive DNA. The fractal globule architecture enables cells to pack DNA densely while avoiding knots, allowing for efficient gene expression and replication.
Genetic sex determination allowed ancient marine reptiles to thrive in open oceans with live birth, freeing them from land-based nesting. This adaptation led to extreme physical changes and diversification of species.
Researchers found ancient flax fibers in a Georgia cave dated to around 34,000 years ago, providing evidence of an early human invention. The discovery suggests that early humans used these fibers for clothing, ropes, and baskets to aid survival and mobility in harsh conditions.
A study by Harvard University researchers estimates that China's electricity demands projected for 2030 can be met by wind power. The switch from coal to greener energy would reduce carbon emissions, but requires an investment of around $900 billion dollars.
Researchers at Harvard University found that rewards promote public cooperation and lead to better outcomes for the group. Positive interpersonal interactions were more effective in building compliance than punishment, contradicting previous studies that focused on punishment.
Deer mice living in Nebraska's Sand Hills rapidly adapted to their environment by evolving lighter coloration, providing better camouflage against visual predators. This genetic change arose from a single mutation in the Agouti gene, driven by natural selection favoring pale coloration.
A Harvard University study found that punishing or rewarding individuals based on accident outcomes can shape behavior, rather than their intention.
The Harvard research team aims to advance micro-manufacturing, ultra-low-power computing and multi-agent coordination using nature as inspiration. They will create artificial sensors and coordination algorithms to mimic the collective behavior of a bee colony.
A study analyzing rare genetic disorders suggests that maternal and paternal genes continue to interact well into childhood, potentially influencing the pace of growth and sexual maturity. This ongoing interplay may be responsible for humanity's unusual extended childhood and unique life history patterns.
Scientists predict a significant rise in wildfires across the western United States due to climate warming, leading to decreased air quality and negative impacts on human health. The predicted area burned by wildfires could increase by 50% by the 2050s, with the greatest increases occurring in the Pacific Northwest and Rocky Mountains.
Research reveals that childhood adversity is associated with diminished neural activity in brain regions involved in processing rewards. This finding suggests a potential link between childhood trauma and depression symptoms such as apathy and low motivation.
A new neuroimaging study finds that honest people show no additional neural activity when telling the truth, implying that extra cognitive processes are not necessary to choose honesty. In contrast, dishonest individuals exhibit increased activity in control-related brain regions when tempted to lie.
Researchers at Harvard University have developed a framework for studying the arrangement of tissue networks created by cell division across various organisms. The model reveals that regular features in tissues can indicate properties about the cell division mechanism itself.
Researchers at Harvard University have demonstrated that individual monkeys within the same species exhibit varying levels of cognitive ability. A study published in PLoS One found that general intelligence, or 'g' factor, accounted for 20% of the variation in performance among cotton-top tamarins.
Researchers at Harvard University have uncovered a fundamental feedback mechanism that regulates blood clotting, leading to new insights into bleeding disorders and potential treatments.
New research shows bees extend hind legs for stability in windy conditions, increasing drag and aerodynamic power by 30%. This behavior is likely seen across Hymenoptera, affecting many flying insects.
Researchers at Harvard University have discovered a group of individuals known as 'super-recognizers,' who possess an extraordinary ability to recognize faces, even after years of not seeing the person. This finding suggests that face recognition may be on a spectrum, with prosopagnosics at one end and super-recognizers at the other.
Researchers at Harvard University have demonstrated the activation energy of impurities in semiconductor nanowires is affected by surrounding dielectric, which can be modified to optimize device performance. The study confirms the dielectric confinement effect, a key phenomenon in doping and conduction in nanostructures.
Researchers at Harvard University found that only species capable of vocal mimicry, such as parrots, can keep a beat, implying an evolutionary link between the two capacities. These birds' movements were more aligned with musical beats than expected by chance, suggesting they synchronized with the rhythm.
Tropical cyclones inject ice into the stratosphere, potentially feeding global warming. The findings suggest an intertwining of severe weather and climate change.
Researchers at Harvard University and Dartmouth College discovered hardy microbes living in isolation beneath an Antarctic glacier. The microbes, similar to those found in modern marine environments, have adapted to survive in extreme conditions by breathing iron and using sulfur catalysts.
Researchers at Harvard University have developed a laser technology that allows control over the polarization direction of emitted radiation. This innovation has vast implications for various applications, including satellite communications, biomolecule detection, and quantum cryptography.
A study by Harvard researchers found that Seguro Popular, a Mexican health care program instituted in 2003, has reduced catastrophic health expenditures among poorer households by almost 60%. The program's primary goal is to reduce healthcare costs for the poor, and its success may have implications for other countries.
Formerly depressed women show different brain activity when exposed to criticism from their mothers, even if they report being fully recovered. They exhibit increased activity in the amygdala and reduced activity in emotion regulation areas compared to healthy controls.
Russell Mittermeier, a leading expert on biodiversity and ecosystem conservation, will deliver the Roger Tory Peterson Memorial Lecture at Harvard University. He has been recognized for his critical work on biodiversity hotspots and species conservation, offering hope for the future of conservation efforts.
A new Harvard University study suggests that knowing how much a stranger enjoyed an experience can be more informative than personal experience in predicting future happiness. The research found that people made accurate predictions when asked about their enjoyment of unknown events after learning about the experiences of others.
Researchers mapped every neuron in a small muscle of mice, finding unique neural circuitry even within mirror-image tissues on the same animal. The study suggests that the mammalian nervous system may be more primitive and flexible than previously thought.
Researchers at Harvard University have mapped the neural circuitry of the nose, revealing a seemingly random patchwork of receptors for different scents. Despite striking differences between smells like coffee and peppermint, cells processing similar odors are found in precisely the same location on the olfactory bulb.
The study found that popularity and likelihood of friends knowing one another are heritable, while location within the network is also genetically linked. This suggests that genes may play a significant role in determining our social connections and behavior.
Researchers at Harvard University have developed implants that mimic an infection to trigger the immune system to attack tumors. The innovative approach successfully marshals T cells against aggressive melanoma in 90% of mice, making it the most effective demonstration to date of a cancer vaccine.
Scientists at Harvard University have discovered a way to synthesize and control the formation of nanobristles into helical clusters. The finding has potential use in energy, information storage, photonics, adhesion, capture and release systems, as well as particle mixing and transport.