The University of California, Berkeley's robotic telescope has captured the earliest image of a gamma-ray burst's optical afterglow, offering unprecedented data for theorists to study. The data provides key constraints for physical models of gamma-ray bursts and will help astronomers better understand these enigmatic events.
Scientists propose that a massive thermal burp could have briefly insulated the moon's core, allowing it to cool quickly and produce a magnetic field. This theory also explains the uneven distribution of metal-rich volcanic rock on the moon's surface.
Researchers found that man-made wetlands in California's San Joaquin Valley can remove up to 69.2% of selenium from agricultural drainage water, converting it into non-toxic dimethyl selenide. The unique ecosystem of the wetlands acts as a bio-geo-chemical filter, trapping selenium in sediment and utilizing plant roots to metabolize it.
The Cosmic Hot Interstellar Plasma Spectrometer satellite will study the bubble of hot gas between nearby stars, helping scientists understand local galaxy regions and supernova origins. With its high resolution, CHIPSat will measure individual lines to determine physical conditions in the hot gas.
Switching to liquefied petroleum gas for household use could add only a 2% increase in global fossil fuel emissions but greatly decrease the environmental impact on local biomass resources. Liquefied petroleum gas burns cleaner than biomass fuels, reducing indoor smoke and associated health risks.
The study reveals a sophisticated neural computation in the retina that enables directional motion detection. The circuit, involving three redundant mechanisms, is crucial for tracking moving objects and providing dynamic visual information to the brain.
Researchers aim to isolate and sequence chloroplast and mitochondrial genomes from 50-100 plants to determine relationships among ancient plant groups. By comparing these genomes, they hope to answer questions about how many times land was colonized by green algae and how multicellular plants evolved.
The brain creates a weighted average of conflicting sensory cues to produce a single mental image. When discrepancies are too large, the brain defaults to information from a single cue, maintaining three separate representations of an object's property.
Research by UC Berkeley scientists shows that atrazine can feminize male leopard frog tadpoles and turn them into female frogs at levels as low as 0.1 parts per billion, a 30 times lower threshold than the current allowable limit for drinking water. The herbicide has been linked to declining amphibian populations in the US and worldwide.
Researchers at UC Berkeley have found that the adult brain has more capabilities to change than previously thought. By exposing non-detectors to a specific odor, they showed that both nostrils can learn to detect it, suggesting a central component in the brain is involved in olfactory learning.
A UC Berkeley study analyzed 27 clinical trials and found that combining Chinese herbal treatments with interferon alfa was 1.5-2 times more effective in reducing viral load than using interferon alfa alone. The most promising results came from patients using a combination of bufotoxin and kurorinone with interferon alfa.
A recent UC Berkeley study contradicts earlier findings on girls with ADHD, revealing they are severely impaired academically and socially. The study, conducted over six weeks, found these girls have difficulty making friends, exhibiting aggressive behavior, and displaying social isolation.
Cancer cells have evolved to continually activate telomerase, keeping telomeres intact and enabling rapid division. Researchers at UC Berkeley are now searching for proteins and signals involved in telomerase shuttling around the cell nucleus to develop new therapeutic strategies.
Scientists are exploring the potential of Antarctica's subglacial lake to test sterile drilling techniques, which could also be used on Mars. The permafrost site is 2.8 kilometers below South Pole Station and contains a frozen mixture of ice and sediment.
The discovery of a Jupiter-like planet and the smallest known planet outside the solar system offers hope for finding life beyond Earth. The newly found planet orbits 55 Cancri at nearly the same distance as Jupiter orbits our sun, making it a near analog to our own solar system.
Researchers found that freezing cancer cells in test tubes increases their vulnerability to bleomycin, a potent anti-cancer drug. This combination therapy may lead to a powerful new form of cancer treatment targeting malignant cells while leaving healthy tissue unharmed.
Atrazine, a widely used herbicide, has been found to demasculinize tadpoles and turn them into hermaphrodites. The herbicide also lowers levels of the male hormone testosterone in sexually mature male frogs.
The University of California, Berkeley, has deployed a first permanent broadband earthquake monitor in Monterey Bay, which will measure earthquake activity from the ocean side of the fractured fault zone. The instrument aims to reveal new information about seismic activity on the Pacific Plate and improve understanding of earthquakes.
A study by UC Berkeley's Bruce N. Ames found that megavitamin therapies can effectively treat over 50 genetic diseases, mostly rare metabolic disorders due to defective enzymes. High-dose vitamins, particularly B vitamins like niacin and thiamine, may also improve metabolism in older populations.
Researchers at UC Berkeley have developed a technology for creating cheap plastic solar cells that can be painted onto any surface, enabling applications such as powering wearables or small devices. The efficiency of the solar cells is currently low, but the team believes it has the potential to improve with further development.
Researchers at UC Berkeley have identified organic nitrogen oxides, previously unknown pollutants, which play a crucial role in atmospheric chemistry. The team's advanced detector can monitor NO compounds continuously with unprecedented sensitivity, enabling better predictions of ozone formation and air pollution impact.
A new fossil discovery in Ethiopia indicates that Homo erectus was a single, widespread species, rather than two separate ones. The 1 million-year-old fossil found in the Middle Awash region of Ethiopia is similar to other Homo erectus fossils from Asia and Africa.
Researchers have found that innovative soil fertility replenishment programs can increase crop yields by two- to four-fold, providing strong evidence for their effectiveness. The programs use natural resources available in Africa, such as trees and rocks, to replenish nutrients depleted from the soil.
Researchers at UC Berkeley have developed a microsized microscope that can capture high-resolution images of living cells, shrinking the size and cost of conventional microscopes. The device has the potential to revolutionize medical research and diagnostics, enabling scientists to study genes and proteins in unprecedented detail.
Researchers at UC Berkeley report that a combination of two dietary supplements, acetyl-L-carnitine and alpha-lipoic acid, improved the health and cognitive function of old rats. The supplements were found to boost energy-producing organelles in cells, restore memory function, and reduce oxidative damage.
Researchers have developed a way to fabricate superlattice nanowires, which can incorporate transistor junctions, light-emitting diodes, and lasers within a single wire. This breakthrough could lead to the creation of ultra-small electronic devices that are equal to or better than current hand-size electronics.
The study, led by UC Berkeley professor James Kirchner, found that the diversification of life obeys 'speed limits' set by evolutionary processes. Biodiversity takes time to recover after an extinction due to complex ecological niche building and evolution.
Researchers at UC Berkeley and Stanford University discovered how lobsters sniff their way around a watery world by flicking antennules into contact with chemosensory hairs sensitive to chemicals. This motion captures detailed maps of swirling odors, suggesting that small differences in odor concentration are preserved.
Researchers found transgenic DNA in four out of six native Mexican corn samples, including the presence of a popular insecticidal bacterium. The contamination is believed to have occurred through multiple pollinations over time, threatening the region's diverse genetic heritage.
Michael H. Dickinson, a UC Berkeley professor, has been awarded the prestigious MacArthur Fellowship for his groundbreaking research on insect flight. His work has led to breakthroughs in understanding how insects fly and maneuver, with potential applications in search and rescue, environmental monitoring, and remote sensing.
A powerful molecular motor enables the virus to pack its DNA under high pressure, compacting it nearly 6,000 times its normal volume. The motor generates an enormous force of 57-60 picoNewtons, enough to lift six aircraft carriers.
A study by UC Berkeley researchers found that a specific type of soy protein called lunasin can prevent the development of skin tumors in mice. The high dose group showed a 70% lower incidence of tumors compared to the control group, with fewer tumors per mouse and a two-week delay in appearance.
A study published in Environmental Health Perspectives found that iron-deficient children have significantly higher blood lead levels than those with normal iron levels. The researchers, led by Asa Bradman, tested blood samples from 319 Sacramento-area children and found an average blood lead level of 5.6 micrograms per deciliter in ir...
Researchers at UC Berkeley have discovered a single gene that can stimulate the immune system to reject a range of cancer tumors. The gene, which activates natural killer cells and other immune cells, shows promise as a potential basis for a vaccine therapy.
Researchers at UC Berkeley have developed a sensitive assay for detecting proteins associated with prostate cancer, which could lead to fast screening and molecular profiling for various diseases. The technique uses micromachined cantilevers that can detect levels of protein markers 20 times lower than the clinically relevant threshold.
Researchers confirm long-standing mystery of magnetic reconnection, a process that generates solar flares and aurorae. The event was observed by NASA's Wind spacecraft as it flew through the Earth's magnetotail, revealing collisionless processes that explain its fast rate.
Researchers at UC Berkeley create a superfluid analog of superconducting SQUID, detecting quantum oscillations in helium-3 and measuring tiny changes in rotation. This breakthrough enables potential ultrasensitivity in gyroscopes and testing predictions from Einstein's general theory of relativity.
Zoologists at UC Berkeley have discovered a new species of salamander in southeastern Mexico that was mistaken for another species due to identical appearance. DNA analysis revealed the two species evolved from different ancestors despite shared adaptations to burrowing.
New theory proposes that iron-rich sediments are stuck to the bottom of the mantle, creating drag that throws off the Earth's wobble. Seismic waves slow down as they approach the core-mantle boundary, suggesting a thin layer of silicates may be present.
A UC Berkeley scientist proposes that chromosome reassortment, rather than genetic mutations, is the cause of cancer's tendency to develop drug resistance. This theory suggests aneuploid cells, with abnormal numbers of chromosomes, are more prone to producing drug-resistant cancer cells.
Researchers found that waddling actually helps penguins save energy by using their leg muscles more efficiently. They also discovered that penguins are not inefficient walkers because of their gait, but rather due to the short length of their legs.
A new map of Mars' ionosphere reveals strong localized magnetic fields as a significant barrier to atmospheric erosion by the solar wind. The findings suggest that these crustal fields played an important role in the past evolution of Mars' atmosphere and could have protected it from being stripped away.
The IMAGE far-ultraviolet camera has captured breathtaking auroras visible from Georgia, Florida, and Texas, revealing minute details in their structure and shape. The camera's ability to image invisible ion auroras has greatly expanded scientists' understanding of the Earth's magnetosphere.
A new study by UC Berkeley researchers reveals that premature birth and low birthweight significantly exacerbate asthma symptoms in children when exposed to smog. Children born prematurely or with low birthweight are more likely to experience severe wheezing, coughing, and shortness of breath on days with high air pollution levels.
Researchers at UC Berkeley found that contract bridge players have increased numbers of immune cells after a game, suggesting a link between brain activity and the immune system. The study suggests that voluntary activities like bridge may help control white blood cell levels to combat disease.
Listeria monocytogenes has discovered a mechanism for managing infection by living comfortably inside cells until ready to break out and spread the infection. The bacteria use a pore-forming toxin, listeriolysin O, that is modified with a PEST sequence tag, allowing it to evade the host's immune system.
The Interplanetary Network detected a gigantic gamma-ray burst, the most distant ever observed, from a dying star 30 times more massive than the sun. The burst is believed to have occurred 11 billion years ago and has been traveling through space for the same amount of time.
Demographer John Wilmoth's analysis of Swedish national death records from 1861 reveals the oldest ages at death for men and women have been rising, with the average maximum age increasing from 101 to 108 years. This trend challenges existing theories that human life span has a fixed biological limit.
Fossils of fungal spores and hyphae dating back 460-455 million years support the theory that fungi aided in plant invasion, suggesting interdependence between organisms. Fungi have been found in association with modern plants for up to 400 million years.
Researchers found that the northern Hayward fault slips at a rate of 5-7 millimeters per year, similar to the surface, indicating it is not locked and releasing built-up strain. This reduces the threat of a major quake on this segment, but other hazards remain high.