Researchers propose a new theory explaining why humans perceive colors as combinations of red, yellow, green, and blue. They suggest that our brain simplifies the natural world's color palette to encode the range of colors, capturing the idea of opponency in color vision.
Researchers found that longer-lived bats have higher levels of cancer-fighting genes and an immune system that can mount an overwhelming attack against infectious organisms and cancer. This discovery suggests that understanding one will help scientists understand the other.
A new molecular compound, TOFA, identified by UC Berkeley scientists, helps cells burn extra energy with no change in food intake or exercise, improving insulin sensitivity and glucose control. The treatment, which works by increasing energy expenditure, shows promise in mouse models and may be used in combination with GLP-1 medications.
Researchers found that North American mammals expanded their range southward much earlier than thought, with identical fossils discovered in Mexico dating back to 10 million years ago. This 'holding pen' era primed the pump for intermittent exchange between 7 and 3 million years ago.
Researchers have developed a new technique that pinpoints areas of human DNA inherited from two unknown, ancient ancestors. The study reveals that modern humans interbred with these 'ghost' ancestors and Denisovans in Eurasia around 1.8 million years ago.
A large-scale study found that even when people are exposed to less social media misinformation, their political beliefs don't change much. Researchers tested what happened when participants saw far less content from untrustworthy sources and found no measurable changes in attitudes.
Researchers at UC Berkeley have found that algae parasitized coral, exploiting a cellular organelle to obtain nutrients. This symbiotic relationship could hold the key to understanding why reefs are dying due to warming oceans.
A unique plant fossil cache in New Mexico reveals angiosperms flourished 10 million years before dinosaurs' demise, contradicting the view that they only took over after their extinction. The discovery showcases a thriving forest dominated by flowering plants with large fruits, challenging the traditional narrative.
Researchers have discovered a new way to detect sudden cardiac death risk using AI, which outperforms existing methods and can identify high-risk patients more accurately. The tool uses EKGs to analyze waveform patterns and has shown promise in predicting patient outcomes with a 7% annual rate of sudden cardiac death.
A new proof-of-concept device created by UC Berkeley researchers can sniff out gases emitted by harmful bacteria, allergens and other food safety hazards. The device uses machine learning to recognize sensor response profiles associated with different foods and can detect the presence of common food allergens such as walnuts and peanuts.
Physicists at UC Berkeley introduce phase contrast to electron microscopy, enabling clearer images of small molecules and structures inside cells. The laser phase plate enhances cryoelectron microscopy, overcoming signal-to-noise limitations and paving the way for new drug discovery.
Researchers found the number of homeless encampment sweeps in Oakland significantly increased after the 2024 Supreme Court decision, with some sites being closed repeatedly. The analysis suggests that sweeps are dispersing people rather than addressing homelessness, pushing vulnerable individuals into more vulnerable neighborhoods.
Researchers are developing an AI assistant to analyze petabytes of imaging data from high-resolution microscopes, which can track cells and molecular interactions in real-time. The goal is to help biologists understand complex biological systems and make new discoveries.
A recent study by UC Berkeley researchers found that rates of violence against women have remained largely unchanged in California, with Black and multiracial women facing the highest risks. The study analyzed 763,000 assault injuries in California from 2005-2022 and found persistent racial disparities.
Biologists have identified the gentoo penguin as consisting of four distinct species, including a newly recognized 'cryptic' species, through genetic analysis. The study suggests that global warming poses a threat to three previously recognized subspecies, highlighting the need for conservation efforts.
A new study reveals that sunbirds employ tongue suction to slurp nectar, a novel mechanism in vertebrates. This finding highlights the power of convergent evolution, where different species adapt to similar ecological challenges in distinct ways.
A groundbreaking experiment tracked plant evolution in response to climate change across 30 sites worldwide, revealing gene variants associated with successful adaptation and tipping points beyond which plants can't adapt. The study provides quantitative data to understand rapid adaptation and predict where risks lie.
A study by University of California, Berkeley biologists found detectable alcohol in at least one flower of 26 of the 29 species of plants tested. Hummingbirds and other animals consume small doses throughout the day without apparent effects, but may metabolize ethanol like mammals do.
Astronomers have confirmed the connection between magnetars and superluminous supernovae, finding definitive evidence for a magnetar forming in the core collapse of a recent supernova. The discovery corroborates a theory proposed 16 years ago and establishes a new phenomenon in exploding stars.
A UC Berkeley-led study reconstructed emissions from Swedish wildfires and found that current climate estimates are failing to fully account for carbon released from smoldering organic soils. This highlights the need for improved climate models to better understand the impact of northern wildfires on the environment.
A recent study has confirmed that wild African chimpanzees consume significant quantities of alcohol, with 17 out of 20 urine samples containing ethyl glucuronide, a metabolic byproduct of ethanol. The chimps' diet likely consists of fermented fruits, which provide around 14 grams of ethanol per day.
Researchers have engineered Listeria bacteria to stimulate the body's innate immune system and eliminate cancer cells. The therapy, which boosts gamma delta T cells, shows promise in treating children with leukemia and preventing graft-versus-host disease.
A new analysis by UC Berkeley researchers found that 'red flag' laws significantly reduced firearm suicides in four states that implemented the laws. The study estimates that these laws prevented over 675 suicides between 2023 and 2024. Non-firearm suicide rates remained unchanged.
The absence of exoplanets orbiting tight binary stars is attributed to the effects of general relativity, which causes gravitational tugs from the stars to make a planet's orbit precess. This process makes it difficult for close-in planets to survive, with 75% being destroyed due to tidal disruptions or ejection from the system.
Scientists observe violent collisions around young star Fomalhaut, detecting the aftermath of two powerful collisions over a 20-year period. The collided objects are estimated to be at least 60 kilometers across and may have formed planets.
A new study examines why some people excel at reading emotions from faces and context, while others struggle. The research finds that individuals use complex or simple strategies to weigh different types of information, with the latter being less cognitively demanding. This variation in integration strategies may contribute to differen...
The Amazon is shifting to a hotter, drier climate with more intense droughts, stressing trees and increasing mortality rates. By 2100, hot drought conditions could occur up to 150 days per year, affecting tree species that are vulnerable to heat stress.
A new monthly series in The Lancet, led by UC Berkeley Professor Seth Holmes, provides critical lens into cultural and social forces contributing to patient conditions. It showcases the need for 'structural intercompetency' among healthcare professionals, highlighting the importance of collaborative work.
Researchers discovered that one microorganism can live with a bit of ambiguity in its genetic code, synthesizing two different proteins seemingly at random. This finding contradicts a long-held dogma and has implications for future disease therapies, including treating diseases caused by premature stop codons.
A new anion-exchange-membrane water electrolyzer technology has been developed to address the degradation issue in membrane electrolyzers. This innovation combines the efficiency of simple caustic or alkaline electrolytes with the low-cost material advantages of solid polymer membranes.
A long-term study found that prescribed burning significantly enhances the net productivity of plots with three treatments, increasing carbon sequestration capacity while maintaining large fire-resistant trees. This approach can help reduce wildfire hazard and support California's goal of net zero carbon by 2045.
Researchers found that zebra finches categorize calls into about a dozen call-types, similar to how humans hear and group them. The birds' ability to distinguish between calls with similar meaning suggests they have a mental representation of the meaning behind these vocalizations.
A new study published in Science provides evidence that chimpanzees can change their minds based on the strength of available evidence, a key feature of rational thought. Researchers found that chimps frequently switched their choices in response to stronger clues, aligning with rational strategies of belief revision.
A new survey conducted by UC Berkeley researchers found that approximately 75% of agricultural workers in Sonoma County have worked during wildfires since 2017. The study also found that half of the farmworkers reported having ailments like headaches or sore throats after working during a wildfire.
A new study revises the origin story of freshwater fish, suggesting that oceanic fish invaded fresh water multiple times to develop improved hearing systems. The discovery was made using a newly discovered fossil fish with a Weberian apparatus, which allows it to hear sounds at high frequencies.
Researchers found genetic adaptations underlying survival in hot and dry environments, revealing how natural selection enabled the Turkana to thrive in extreme conditions. The study identified key genes, including STC1, that play vital roles in conserving water and protecting kidneys from waste.
Researchers at UC Berkeley find that chimpanzees consume about 14 grams of pure ethanol per day, equivalent to one standard American drink. This chronic exposure suggests a dietary heritage of alcohol from our common ancestor with chimpanzees.
A new study reveals the complex brain circuits involved in growth hormone release during sleep. The findings provide a map for understanding how sleep and hormone regulation interact, potentially leading to new treatments for sleep disorders and degenerative diseases.
A UC Berkeley professor and her team have discovered gene clusters in the oral microbiome that produce molecules helping good bacteria stick to teeth, outcompeting acid-producing cavities. The researchers plan to introduce these gene clusters into healthy bacteria to form strong biofilms, reducing cavities.
A new UC Berkeley-led study demonstrates how home hardening and defensible space can significantly reduce wildfire risk. The research found that these strategies, when combined, can double the number of homes that survive a blaze and reduce structure losses by up to 50%.
Robotics experts disagree with claims that humanoid robots will surpass human capabilities in surgery, factory work, and serving as personal butlers. The main limitation is dexterity, making tasks like picking up objects difficult for current robot technology.
A team of researchers has developed a robot with self-morphing, wing-like feet that mimic the agile movements of water striders. The insect-scale robot enhances surface maneuverability and can execute sharp turns in just 50 milliseconds, rivaling the rapid aerial maneuvers of flying flies.
Researchers at UC Berkeley developed an AI-powered training method called Human-in-the-Loop Sample Efficient Robotic Reinforcement Learning (HiL-SERL) that enables robots to perform complicated tasks with precision and speed. With human feedback, robots learn from demonstrations and real-world attempts, achieving a 100% success rate in...
Researchers at UC Berkeley developed a method to understand the isotope signatures of methane from different environments using CRISPR. This study can change how scientists calculate the contributions of various environmental sources to Earth's total methane budget.
A new study by the Beery lab at UC Berkeley suggests that oxytocin is essential for the formation of friendships and selective peer relationships. Oxytocin signaling delays the formation of relationships and creates deficits in long-term peer relationships, leading to a lack of social rewards and selectivity.
Gray wolf pups are born nearly helpless, but their mothers take risks to move them close to prey, such as elk, which is crucial for conservation efforts. The study's findings counter years of assumptions that migratory mammals can escape predation in spring due to immobile offspring.
Scientists have identified a set of genes in zebrafish that reactivate after damage to the heart and patch it up like new. The researchers hope to use CRISPR tools to reactivate similar genes in humans and jump-start repair of the heart and other tissues after injury.
Researchers recorded activity from hundreds of neurons simultaneously in flying bats, revealing insights into neural replay and theta sequences. This study sheds light on the formation and storage of long-term memories in humans, potentially leading to new treatments for neurological disorders.
A new technology combines the coffee-ring effect with plasmonics and AI for rapid diagnostics, offering highly accurate results in under 12 minutes. The test can spot diseases like COVID-19, prostate cancer, and sepsis, making it a game-changer for point-of-care diagnostics.
A comprehensive analysis of 2,762 Indian genomes reveals a complex history of genetic mixing, endogamy, and population bottlenecks that shaped the country's genetic variation, health, and disease. The study found that most genetic variation in India can be explained by a single migration out of Africa about 50,000 years ago.