The Earth is surrounded by a complex system of electric and magnetic fields, known as the magnetosphere, which interacts with charged particles called plasma. Scientists have developed a general model to describe the density of this surrounding plasma, revealing its behavior and effects on our planet.
A University at Buffalo study found no association between DDE-contaminated sport fish and shorter lactation periods. Women who ate Lake Ontario fish had lower DDE levels in their breast milk, contradicting initial expectations.
Researchers from Max Planck Institute simulated grazing collisions of two black holes, finding huge amounts of energy coalescing black holes emit in gravitational waves. The simulations revealed that these events could release one percent of the combined mass's energy, a phenomenon thousand times more powerful than our sun's emissions.
The University of Hawai'i computer system uses Geostationary Operational Environmental Satellites (GOES) to detect heat from fires on the ground, providing early warnings for forest services. The system has been tested in Southern California and will soon monitor fires across the West Coast, including California, Oregon, and Washington.
A daily dose of fish oil significantly improves kidney function and reduces the risk of advanced kidney failure in people with IgA nephropathy. Researchers followed 106 study participants for over six years, finding sustained benefits from fish oil supplementation.
A recent study by the Mayo Clinic found that 10 out of 16 men experienced a greater than 50% reduction in hot flashes while taking venlafaxine. The incidence of severe and very severe hot flashes was also significantly reduced.
Scientists discover that removing two proteins controlling cell proliferation can lead to deadly consequences, including leukemia and immune system dysfunction. The study reveals critical regulatory roles of SOCS1 in T cells and its absence makes cells sensitive to cytokines.
A major study found that children whose mothers are chronically depressed perform significantly worse on tests of verbal comprehension, language skills, and school readiness compared to those with no maternal depression. Mothers who were sometimes depressed fell somewhere in between.
Children of depressed mothers performed poorly on measures of school readiness, verbal comprehension, and expressive language skills. However, maternal sensitivity played a crucial role in the well-being of children, even when mothers were depressed.
Scientists have developed a method to deliver large proteins into cells using a molecular passport. The technology allows for lower doses and fewer side effects, making it a promising avenue for therapeutic approaches. This breakthrough could enable the creation of drugs that act only in disease-related cells.
Researchers successfully delivered fully functional proteins inside cells using a piece of the AIDS virus, overcoming the bioavailability wall that restricts large molecules. This technique has the potential to treat diseases such as cancer and genetic disorders by inserting working versions of damaged proteins into affected cells.
A study by Mayo Clinic pediatrician Philip R. Fischer found that pseudoephedrine hydrochloride was not effective in decreasing ear pain in children during air travel. Offering food or drink can help relieve pressure and clear earache, with swallowing sometimes helping to open eustachian tubes.
A new HIV drug intervention using nevirapine is significantly cheaper and more effective than three similar treatments, preventing 603 infections at a cost of $80,000 per year. The universal nevirapine program is the most cost-effective option, with a treatment cost of $138 to prevent one case of infant HIV.
Gene-repair pioneer Eric Kmiec has established the University of Delaware's Laboratory of Gene Therapy, focusing on sickle-cell anemia, Huntington's Disease and food-crop advances. His technique repairs genetic mutations by stitching mutated sequences back together in their proper order.
Researchers at Thomas Jefferson University have isolated hematopoietic stem cells using a specific marker, enabling laboratory production of all types of blood cells. This breakthrough has the potential to alleviate blood shortages for transfusions and develop innovative approaches to bone marrow transplants and gene therapy.
A study published in the New England Journal of Medicine shows that adding spironolactone to standard treatment regimens for heart failure reduced mortality by 30 percent. The research confirms aldosterone's role in heart failure pathophysiology and opens the door to more effective treatment options.
Researchers developed an electronic stock exchange that rapidly detects and shares insider information, imposing electronic penalties on insider traders. This approach can level the playing field and diminish the gains from insider trading.
A Purdue University researcher has discovered a natural plant toxin that can stop invading fungi by triggering programmed cell death in fungal cells. This finding could lead to the development of genetically engineered crops that are resistant to fungal infections, reducing the need for fungicides and saving farmers money.
Researchers developed a technique to follow electronic-structural rearrangements in molecules, enabling insights into molecular electronics and biological processes like vision and photosynthesis. This breakthrough uses femtosecond laser technology to distinguish atomic motions from electronic rearrangements.
A team of researchers is using seismic equipment to map the Earth's structure beneath the Rocky Mountains, aiming to understand how ancient land masses collided to form the continent. By analyzing density and material properties of rocks, they hope to visualize the structure of what lies far under the Earth's surface.
Researchers at Princeton University genetically modified mice to have improved learning and memory by adding a single gene, NR2B. The results show that the brain uses a common biochemical mechanism for forming associations, and this finding could lead to human gene therapy for dementia.
A study published in the Journal of the American Academy of Dermatology found that severe psoriasis is debilitating, both physically and mentally, affecting quality of life for patients
The research describes a cone-like deformation as the basic building block of a crumpled object, found in mountains and wrinkled materials. The study also reveals that crumpling is dominated by bending rather than stretching in its initial stages.
Biologists predict that global warming and pollution will lead to more frequent die-offs of sea life, with diseases such as distemper and herpes virus spreading among marine organisms. The study highlights the need for interdisciplinary research to understand the impacts of climate change on ocean epidemics.
Three tiny teeth found in a piece of lower jawbone from a small Jurassic period mammal on Madagascar's island, contradicting widely-held ideas on mammalian evolution. The discovery more than doubles the age of the oldest known mammal from Madagascar and provides new insights into early branching events in the family tree of mammals.
Scientists at Emory University discovered a new family of enzymes linked to abnormal cell growth in cancer and cardiovascular disease. The Mox1 enzyme converts oxygen into reactive oxygen molecules that instruct cells to divide more rapidly.
Researchers found that NF-kappaB links growth factor signaling with proto-oncogenes Myc, Akt, and Ras. The molecular mechanism regulates cell growth and death, providing a built-in protection against cancer.
Researchers at Boston University developed a biologically inspired model to improve the fidelity of electronic devices by mimicking the noise-shaping abilities of neuronal networks. The system can effectively filter out unwanted information and identify desired signals over a wider bandwidth.
Scientists found that osteonectin, a bone protein, attracts prostate cancer cells and stimulates their invasion. This discovery has important implications for the treatment of prostate cancer and other bone-seeking cancers.
Researchers at Virginia Tech have created a new family of molecules with metal atoms inside a carbon cage. The discovery has significant implications for various fields such as medicine, optics, and electronics. The researchers found that they can produce these molecules in high yield and purity using a unique process.
Researchers at Arizona State University have achieved clear images of electron orbitals in Cu2O, verifying the hypothesis that both ionic and covalent bonding occurs in the material. The images show complex formations resembling a dumbbell shape, indicating the presence of metal-to-metal bonds.
Winglee's design harnesses solar wind to accelerate spacecraft, potentially reaching speeds of over 100km/s. The sailcloth is a magnetic field that repels ions and charged particles, exerting a small but steady force on the spacecraft.
Boston University scientists are developing a new form of microscopy that utilizes entangled-photon fluorescence microscopy to observe brain synapses. This technology holds promise for unraveling the century-old question of how dendritic spines function, crucial for cognitive processes like learning and memory.
Researchers have discovered a prehistoric virus in Arctic ice that could potentially re-emerge as the climate warms. The ancient tomato mosaic tobamovirus was found in ice cores dating back 500 to 140,000 years, raising concerns about the possibility of new epidemics.
Scientists create a new 'drought map' using National Oceanic and Atmospheric Administration (NOAA) satellite data to identify areas hardest hit by the drought. The map compares current surface temperature measurements to average temperatures over the last 10 years, showing whether an area has a normal, low, medium or high drought index.
A new study led by Dr. Don Redelmeier found that people overestimate the speed of vehicles in the next lane, leading to unnecessary lane changes. Staying in one's lane is safer and achieves similar travel times as more aggressive driving.
A recent University of Iowa Health Care study found that genetic factors and sex differences significantly affect human responses to endotoxin, with women more likely to experience declined airway function. The study examined 72 individuals without respiratory conditions and discovered a wide range of reactions to the contaminant.
Researchers at UNC-CH have developed a new gene mutation detection method that is simple and inexpensive. This technique allows scientists to screen for minute changes in the genetic makeup of humans, animals, plants or viruses.
A new radiation detector based on optical fibers has been developed to detect illicit plutonium. The device is light, flexible, and can be used in various applications, including airport security and medical treatments for brain tumors.
Researchers found that people with heart disease can expect greater benefits from lowering cholesterol levels than those without, with a 60% decrease in heart attacks and 80% decrease in deaths. Emphasizing secondary prevention is now considered more cost-effective due to these significant benefits.
Scientists have identified a genetic defect linked to insulin resistance and adult diabetes, providing a target for potential new treatments. The Q allele of the PC-1 gene is three times more common among insulin-resistant people and twice as frequent among adult diabetics.
Researchers at Purdue University have identified a protein segment crucial for the infection of cells by retroviruses and other viruses. By replacing just one amino acid in this region, they were able to eliminate fusion between the virus and its host cell. This discovery may lead to novel treatments to block the entry of these viruses.
Researchers have successfully developed and used several types of tools to analyze the fruit fly Drosophila melanogaster genome, extracting valuable information about genes and their function. The findings include a large-scale analysis of over 1,000 mutant fly strains, which identified more than 250 new genes.
The conference in Italy will discuss global change's effects on protected areas, including coastal erosions, water resources, and ski resorts. The event will also examine the impact of climate change on biodiversity and explore options for human intervention.
Wistar Institute scientists have determined the three-dimensional structure of a key enzyme involved in gene activation, GCN5. The study reveals details on how the enzyme carries out its function and identifies the structural adjustments needed for proper regulation of gene activation.
Researchers at the University of Pennsylvania Cancer Center found that bilateral prophylactic oophorectomy reduces breast cancer risk in women with a BRCA1 gene mutation. After 10 years, the incidence of breast cancer among women who had their ovaries removed was significantly lower than those who did not.