A recent study by UC Berkeley researchers suggests that ethanol can be a good substitute for gasoline, offering substantial energy savings and reduced greenhouse gas emissions. The study analyzes six high-profile studies of ethanol and finds that producing ethanol from corn uses significantly less petroleum than producing gasoline.
Astronomers have discovered two bright debris disks around nearby stars, similar to our own solar system's Kuiper Belt. These narrow disks are believed to be shaped by the presence of a star-like companion that continually grooms their edges.
Astronomers have long hoped to find magnetic forces shaping interstellar clouds, and now they've done so. A helical magnetic field was detected around the Orion Molecular Cloud, providing the first evidence of its structure.
Researchers found that tap roots in deep-rooted plants transfer rainwater to reservoirs underground, redistributing water upwards during dry periods, increasing photosynthesis and transpiration. This effect can increase carbon uptake by 40% and impact global climate globally.
Researchers at UC Berkeley will invite Internet users to help them search for interstellar dust grains captured by NASA's Stardust spacecraft. The 'virtual microscope' technology allows anyone with an internet connection to scan images of aerogel for tracks left by speeding dust, in hopes of discovering grains from distant stars.
Researchers have charted a warp in the Milky Way's hydrogen gas layer, finding it vibrates like a drum due to interaction with dark matter. The Magellanic Clouds' passage through the dark matter halo creates a wake that enhances their gravitational influence on the disk.
Researchers found that marbled murrelets in the past fed on more nutritious prey, such as sardines and squid, while modern-day birds rely on lower-value food sources like krill. This shift in diet affects the birds' energy levels, reproductive success, and nesting patterns.
A new study found that the food additive dihydrocoumarin inhibits the activity of Sir2p and SIRT1 enzymes in yeast, which are forms of sirtuin also found in humans. This inhibition increases cell toxicity and decreases lifespan by up to 30%.
Researchers found ancient microbes in ice cores from Greenland, which could be a preview of what's discovered under Mars' surface. The discovery suggests that methane-generating Archaea might exist on Mars, and state-of-the-art instruments could detect them around meteor craters.
Researchers discovered hundreds of auroras on Mars over six years, linked to strong magnetic field patches in the crust. These events produce ultraviolet light and are not as colorful as Earth's auroras.
Researchers found that plants respond differently to bacteria that efficiently produce nitrogen, with root nodules growing bigger in response to good sharers. This complex relationship suggests that agricultural practices could disrupt these interactions and create plants with reduced ability to choose among root bacteria.
A team of geologists and anthropologists reevaluated the alleged 40,000-year-old human footprints in Mexico, determining a new age of around 1.3 million years using argon/argon dating technique. This revised date challenges the accepted theory that humans arrived in the Americas at 11,000 years ago, sparking debate among researchers.
Researchers reject competitive accretion model, which predicts stars form through gas accretion, in favor of gravitational collapse and fragmentation theory. The new model shows turbulence hinders accretion, resulting in stable core mass, contradicting observations of brown dwarfs with planetary disks.
A new system can predict the total magnitude of an earthquake within seconds, allowing for tens of seconds of warning. This allows for critical actions such as shutting down power grids and evacuating buildings, potentially saving lives and reducing damage.
A new study finds that sea otters played a key role in driving up the size of abalones in California's coastal kelp forests. The researchers speculate that by preying on sea urchins and smaller snails, otters allowed abalones to thrive and grow huge on abundant kelp.
Scientists have captured high-resolution snapshots of the bacterial ribosome, allowing them to build more detailed models and gain insights into how specific antibiotics work. The new data reveals the ribosome's structure and function during protein manufacturing, including its ability to withstand stress and neutralize negative charge.
Researchers found that reestablished contact between two isolated green-eyed tree frog populations led to the emergence of a new species due to females' preference for mates from their own lineage. This preference resulted in reproductive isolation and accelerated evolution, ultimately giving rise to a distinct species.
A new study by Janis Dickinson found that accumulated wealth encourages delayed dispersal in Western bluebirds, leading to close-knit family relationships. By manipulating the mistletoe resource, Dickinson demonstrated that reducing wealth causes sons to leave their parents' territory.
Researchers found that older adults' brains have trouble filtering out distracting information, leading to memory impairment. The study provides a new diagnostic tool for attention and memory problems in both young and old individuals.
A team of researchers at UC Berkeley has successfully created a Bose-Einstein condensate in a magnetic storage ring, containing rubidium atoms at extremely low temperatures. The cold collisions of these slow-moving atoms may reveal new insights into quantum physics.
Researchers at UC Berkeley found that humans can reliably discern the source of an odor when presented with it through one nostril. The brain's primary olfactory cortex is divided into separate areas for each nostril, allowing for accurate localization. This ability has implications for various fields, including truffle hunting.
Astronomers have discovered the first triple asteroid system, 87 Sylvia, consisting of a large asteroid and two smaller moons, Romulus and Remus. The discovery reveals that the asteroids may be formed from debris left over from collisions between larger asteroids.
A new study suggests that continued high levels of fossil fuel emissions will outstrip the land and oceans' ability to absorb carbon, leading to accelerated climate warming. The 'breathing biosphere' can only absorb carbon at a certain rate, and increased temperatures and droughts lower plant uptake of CO2.
A new study reveals that ocean spray plays a crucial role in lubricating the swirling winds of hurricanes and cyclones. The researchers found that large water droplets kicked up by rough seas can inhibit turbulence, allowing winds to build to speeds approaching 200 miles per hour.
Engineers develop optoelectronic tweezers that can manipulate large numbers of single cells and particles, offering a practical advantage over existing methods. The device uses a photoconductive surface and light-emitting diode to create an electric field for particle manipulation.
Researchers found that cells with damaged DNA trigger a mechanism to signal natural killer cells, which attack and destroy cancerous cells. The immune system's ability to identify cancer cells is crucial in preventing tumor growth.
Nanofluidic transistors, the basis of future chemical processors, have been successfully created by researchers. These devices can control fluid flow without moving parts, enabling applications such as cancer diagnosis and biomolecular sensing.
Scientists at the University of California, Berkeley, have successfully tested their life detection instrument, the Mars Organic Analyzer (MOA), which can detect amino acids and homochirality on Mars. The instrument passed key tests in Chile's Atacama Desert, paving the way for its inclusion on the European Space Agency's ExoMars mission.
The discovery of Revueltosaurus, a crocodile ancestor, upends the traditional understanding of dinosaur evolution. The fossil finds suggest that herbivorous ornithischians and meat-eating theropods did not co-evolve in the Late Triassic as previously thought.
Astronomers discover a perturbed dusty belt around Fomalhaut, indicating the presence of a planet. The discovery provides valuable insights into debris disks and planetary formation.
The newly discovered planet, orbiting Gliese 876, is the smallest and first rocky terrestrial planet found around a normal star. Its surface temperature may be too hot for life as we know it due to its close proximity to the star.
A blood-based TB test, QuantiFERON-TB-Gold, has been shown to match the results of the traditional tuberculin skin test among Indian healthcare workers. The study found a high level of agreement between the two tests, with only minor impact from previous TB vaccination.
Scientists have discovered that Rh proteins, previously thought to be inactive carriers, play a crucial role in facilitating the transfer of carbon dioxide in and out of red blood cells. This finding has significant implications for our understanding of human physiology, including breathing, pH regulation, and kidney function.
Researchers have found tantalizing evidence that short gamma-ray bursts are caused by the collision of old, dense neutron stars. The discovery was made using data from the Swift satellite and spectroscopy from the Keck II telescope, which pinpointed a new burst near an elliptical galaxy.
A team of astronomers suggests that Type Ic supernovae could produce gamma-ray bursts through the collapsar model, which proposes an asymmetric explosion mechanism and a jet of particles and energy. The theory is supported by observations with Keck and Subaru telescopes in Hawaii.
Researchers estimated that the quake caused a massive 5-20 meter displacement along the 1,300-kilometer fault, leading to significant rearrangement of the Earth's surface. The tremors triggered devastating tsunamis killing over 300,000 people across Southeast Asia.
A team of paleontologists analyzed stegosaur plates to rule out thermoregulation as a function. Instead, they suggest that the plates may have been used for species recognition, similar to African antelopes. The analysis also found that scutes on other dinosaur ancestors had similar internal structures, supporting this theory.
A newly discovered lungless salamander in Korea has significant implications for the understanding of amphibian evolution and biogeography. The species, named Karsenia koreana, is distinct from other lungless salamanders and sheds light on their historical distribution across Asia and Europe.
Researchers have developed a new tool that allows them to visualize cells in real-time, revealing details about their movement and behavior. The technique, called two-photon laser-scanning microscopy, has provided insights into the goal-oriented migration of activated T cells and the random wanderings of immature T cells.
Researchers at UC Berkeley develop a silver superlens that breaks the diffraction limit, enabling resolution of up to 60 nanometers in images of nanowires and biological samples. This breakthrough opens doors to advances in nanoengineering, biomedical imaging, and high-density electronic circuitry.
Researchers using the DEEP2 Galaxy Redshift Survey observe a fundamental constant unchanged over 7 billion years. The fine structure constant affects atomic interactions and light emission, with no variation detected in distant galaxies.
The Team for Research in Ubiquitous Secure Technology (TRUST) center aims to develop new technologies to design, build, and operate trustworthy information systems. The researchers will focus on developing secure embedded systems, integrating trusted components, and creating information management software tools.
A new UC study reveals that children inside school buses inhale significantly more exhaust pollutants than those outside, particularly among older buses. The researchers found that for every metric ton of pollution emitted by a school bus, kids on that bus inhale comparable or larger amounts of pollution.
A study published in Science found that charcoal use in Africa contributes to premature deaths and greenhouse gas emissions. The authors suggest transitioning from biomass fuels to cleaner alternatives could prevent millions of premature deaths.
Researchers at UC Berkeley have observed octopuses walking on two arms, using the outer halves as 'tank treads' for locomotion. This bipedal behavior may be a strategy for backing away from predators while maintaining camouflage.
Gray wolves help regulate elk populations, providing a steady food source for scavengers like bears and eagles during severe winters. The study highlights the importance of wolves in mitigating the effects of climate change on ecosystems.
The MicroJet injector uses an electronic actuator to propel vaccinations or drugs through the skin without a needle, reducing pain and increasing control over the delivery process. The device's tunable electronic circuit allows for customization to individual patient needs, addressing issues with variability in current jet injectors.
Researchers at UC Berkeley have discovered three overlapping signals in the embryo that are crucial for proper development of the backbone and belly. By blocking these signals, the team found that tissues form on the back were lost while belly tissues were greatly expanded, leading to a repatterning of the entire embryo.
A systematic survey of over 820 species found 174 species of carabid beetles with only one testis. The researchers discovered that the monorchid beetles' accessory glands were larger than normal, suggesting a possible link to space competition in the abdomen.
A study by UC Berkeley researcher Alan Krakauer found that subordinate male wild turkeys benefit indirectly from helping their dominant brothers breed, gaining an average of 1.7 offspring. This cooperative behavior is a key example of kin selection, which favors cooperation over selfishness.