A study of 1833 HIV patients found that specific mitochondrial DNA genotypes accelerate AIDS development, while others delay it. This suggests that genetic tests could provide accurate prognoses and guide early treatment initiation.
Researchers have identified a new form of fatal dementia in 16 Americans, with 10 victims already deceased, characterized by brain damage caused by misfolded protein accumulation, differing from known CJD, prompting genetic and environmental investigation
Neuroscientists are developing software that may turn thoughts into speech for patients like Eric Ramsey, who was left 'locked-in' after a car accident. By analyzing signals from his brain activity, the team has identified distinct patterns associated with vowel sounds, allowing them to correctly identify around 80% of the time.
Physicists Xiao-Gang Wen and Michael Levin propose a new state of matter where electrons are entangled in string-nets. Their model predicts the emergence of conventional particles and fractionally charged quasiparticles, which behave according to Maxwell's equations.
WikiLeaks, an online service designed to allow anyone to post sensitive government documents without being traced, is set to launch. The site aims to protect whistle-blowers and journalists from jail sentences for emailing sensitive information; however, concerns remain about the misuse of its anonymity feature.
Recent test tube and animal experiments suggest that certain general anaesthetics could increase the risk of developing Alzheimer's disease and other memory problems in elderly patients. The studies also highlight the need for more careful recording of anaesthetic combinations and doses to assess potential risks.
A palaeontologist proposes that gradual climate change caused most mass extinctions, including the Permian and Triassic events. This theory challenges the widely accepted asteroid impact hypothesis.
Researchers have created a neural implant that can remotely control shark movements and decode their emotions. The technology has potential applications in understanding animal behavior, boosting research into paralysis, and even using sharks as stealth spies.
Lake Victoria is losing water at an alarming rate due to the operation of Uganda's dams, which have released up to 55% more water than permitted. The lake is now at an 80-year low, with devastating effects on fishing communities and towns.
A new robot system developed by Dmitry Oleynikov and colleagues enables surgeons to visualize the abdominal cavity using minimal incisions, allowing for less trauma and potentially reducing scars. The device is controlled from a console and can be inserted through small incisions, allowing for more flexibility in surgical procedures.
The UK Biobank project and the American National Human Genome Research Institute project will gather information to study the interaction between genes and environment over time. The studies aim to identify new treatments for diseases such as cancer and heart disease, but critics raise concerns about privacy and data reliability.
Scientists have found that injecting a specific amino acid into rats can alter their gene expression, raising hopes for potential treatments for diseases. The study also showed that certain nutrients can influence gene expression in animals even after birth, sparking interest in the role of diet in shaping our genes.
A team of astronomers has discovered a hot Jupiter planet in a triple star system, challenging conventional theories of planetary formation. The discovery suggests that it is possible for planets to form around the host star and then be captured by a binary system, explaining the unusual configuration of the HD 188753 system.
A team of scientists has created a new method for controlled release of drugs by layering thin polymer films with embedded drugs. This technique allows for precise timing and sequence control, opening up broader applications in medicine.
Researchers use microspectrometry to map the unique color patterns of individual gems, revealing differences even among same-type stones. This technique could provide valuable information for gemstone authentication and potential recovery of stolen stones.
Forensic bite-mark matching has been criticized due to its fallibility and distortion problems. A new approach using 3D imaging has shown promise in improving accuracy, but with a 15% chance of incorrect matches. The technology could be useful in courtrooms for illustrating the likelihood of a match.
Researchers examined medieval and Renaissance manuals and art to understand gladiatorial combat tactics. They infer that battles typically had three critical moments: initial contact, wounding, and grappling before concluding without bloodshed.
A study on bats revealed a key region of growth plate that allowed digits to grow longer, suggesting rapid evolution. Genetic studies show that bats are closest to ferungulates, not primates or shrews.
Researchers use nuclear transfer to add women's own mitochondria to eggs, preventing inherited diseases caused by mitochondrial mutations. The technique involves adding the woman's own mitochondria to her eggs, reducing controversy and potential health risks compared to using donor mitochondria.
The nTag device uses infrared links and RFID chips to connect people with common interests, alerting them to potential matches. Despite some initial issues, most delegates were impressed with the service, exchanging over 3,600 business cards during the event.
Researchers have successfully treated rats with spinal cord injuries using embryonic stem cells, which can potentially treat paralysis and degenerative nerve diseases. The treated rats regained ability to walk after nine weeks, with analysis revealing new myelin sheaths and growth factors that stimulated neuron formation.
Researchers have found that heating broccoli to 60°C increases the levels of anti-carcinogenic sulphoraphanes, which may help prevent cancer. To achieve high levels of these beneficial compounds, plant breeders could consider eliminating genes that code for a protein called ESP.
Researchers have developed a silicon-chip qubit that can perform quantum computations without leaking information due to decoherence. This achievement is based on a blueprint from 1998 and could lead to the creation of large arrays of qubits for practical quantum processing.
A recent terror warning highlights the potential danger of laptops and electronic devices on planes, sparking calls for improved security measures. Researchers like Uber advocate for airline monitoring systems to detect interfering signals inside aircraft cabins.
A new study reveals that men are on average twice as likely to die prematurely as women at every age, particularly in their twenties. The disparity holds true for various causes of death, including car crashes and heart disease. If male mortality rates matched female rates, over 375,000 lives would be saved annually in the US.
A study reveals that Alzheimer's plaques can cause a flood of negative ions to drain healthy cells of their charge, leading to cell death. Researchers found that certain drugs can reverse this effect, suggesting a new direction for therapy development.
Researchers found that players should bank money after each correct answer to maximize their winnings. However, the game's psychological dynamics can lead players to abandon this optimal strategy due to the host's aggressive tactics.
A driver going at 65 miles per hour may think the average speed is over 70, while a slow driver perceives a high proportion of fast cars. Heavy traffic skews perception, making brake and accelerator sensitivity twice as sensitive.
Researchers are using computer simulations to determine if the 47 Ursae Majoris system can contain an Earth-like planet. The system's asteroid belt is in the habitable zone, increasing the likelihood of finding a terrestrial planet.
A recent study by IBM and researchers found that software-based robotic trading agents ('bots') made seven per cent more cash than people in a commodities market test. The bots used basic strategies to maximize their profit, while humans were given an upper spending limit and minimum sale price.
The AI-powered Author system can generate readable prose, including dialogue and short stories, by analyzing a story plan and applying rules to create grammatically correct sentences. However, it still lacks the ability to discern fact from fiction, which is a significant hurdle before it can be used for hot news reporting.
Researchers found that bacteria thrived in around a third of common pesticides, with Shigella, E. coli, and Salmonella growing best on chlorothalonil. The risk of food poisoning could increase one-thousandfold if contaminated water is used on crops.
A physicist claims that scientists have underestimated the devastating potential costs of creating killer strangelets at a new US particle accelerator. The probability of such an event is tiny, but Kent argues that the scale of the destruction should be considered in risk assessments.
A report by the North American Commission for Environmental Cooperation identifies industrial plants in the US as the main polluters of dioxin in Nunavut, with sources including municipal waste incinerators and cement kilns. The findings provide a new tool for governments to clamp down on polluters and control emissions.
A fatal tropical disease has infected large numbers of foxhounds in the US, causing skin lesions, hair loss, and joint issues. At least 12% of dogs have antibodies suggesting exposure to the parasite, with 2% showing a strong response, prompting public health officials to recommend quarantine or euthanasia.
Research on a monkey vaccine for anthrax suggests that while vaccinated individuals may survive an attack, they could become severely ill, posing a burden on the military. The US Army Medical Research Institute's 1991 test found that monkeys given the vaccine became sick for up to two weeks after inhaling anthrax spores.
Poultry farmers can stop using antibiotics to promote growth in birds by adding antibodies against appetite-suppressing neurotransmitters and a fatty acid found in hamburgers. This alternative method produces similar growth gains as antibiotics, with improvements of 3-5% in growth rates.
A new AI system, CONSA, helps bickering computer programs resolve differences and come up with a satisfactory result. The system has been successfully tested on agent-controlled robot football teams and helicopter combat simulations.
Research by Australian scientist Peter Dingle found that potted plants have a limited effect on reducing formaldehyde levels, a toxic chemical linked to sick building syndrome. While plants can improve the aesthetic environment, they do not significantly clean the air of pollutants.
Scientists discover that people prefer certain smells when sniffed through one nostril over the other. The left nostril is more accurate for identifying odours, while the right nostril enhances pleasantness perception. This finding fits with brain processing theories and may lead to further research on smell perception.
Researchers found that expectant fathers' hormones fluctuate during pregnancy, mimicking their partners' changes. Testosterone levels dropped significantly after birth, and lower levels were associated with increased paternal behavior.
Researchers found that calculations taking longer than 26 months on current hardware are not worth starting. Instead, delaying until a more powerful computer is available can save time and resources. This strategy allows for optimal use of limited budgets for computers.
A New York-based council argues that health scares about pesticides in food are unjustified on scientific grounds, citing issues of dose and exposure. Experts warn that the risks from nature don't end with cancer, as certain foods like potatoes contain natural toxins.
Researchers are testing gene therapy using nerve growth factor (NGF) to slow Alzheimer's disease progression. The trial aims to assess the safety of NGF-producing cells injected into patients' brains, with potential benefits for slowing dementia.
A new analysis by Futron estimates the risks faced by NASA's space station crew, including serious illness, deaths, and accidents inside the station. The consultancy predicts a 93% probability that a micrometeorite impact will cause disaster if it occurs.
Researchers found that having an older brother predisposes individuals to random body asymmetries, such as hand and ear width variations. The study suggests a link between the immune system's response to male fetuses, with each successive male triggering a stronger reaction.
Researchers have developed tiny implants, called BIONs, that can be injected into muscles to stimulate them and prevent wasting. The implants use radio signals to activate electrical stimuli, offering a potential breakthrough in treating stroke patients who are at risk of serious complications such as thrombosis and muscle dislocation.
Astronomers discovered a potential satellite orbiting Comet Hale-Bopp using Hubble Space Telescope images. Sekanina's model suggests a 33-kilometre-wide moon about 200 kilometres from the comet's nucleus.
Deep-sea animals have higher concentrations of trimethylamine oxide (TMAO), a compound that helps proteins withstand high pressures and misfolded proteins. TMAO's protective power extends beyond sea creatures to humans, with potential applications in cystic fibrosis treatment.
The Red Cross has identified new 'cruel weapons' such as sound beams, sticky foam, capture nets, and microwaves that can cause severe injuries. The organization's SIrUS Project aims to outlaw these weapons by defining superfluous injury and unnecessary suffering based on scientific data.