Scientists have created a fluorescent probe that can tag single specimens of tuberculosis bacteria, which could lead to faster diagnosis and more effective treatments. The probe works by detecting the presence of an enzyme called BlaC, allowing for the identification of live versus dead bacteria.
Researchers have identified a mechanism by which fat is transferred into tissues, revealing that blocking key receptors can limit fat delivery. Disabled mice on high-fat diets showed no weight gain, while control mice gained twice as much weight.
Researchers found that cells undergo self-destruction via trigger waves that travel at a constant speed of nearly 30 micrometers per minute. This process enables large distances to be covered without losing strength or speed, challenging previous assumptions about cell death propagation.
A letter from a medical examiner to a physician about a recent fatal overdose can inspire safer prescribing habits, a new study suggests. The research found that physicians who received such letters prescribed 9.7% fewer opioids over three months.
A genome-wide scan reveals the shared loss of Paraoxonase 1 (PON1) gene function across marine mammal lineages, leaving them vulnerable to neurotoxic chemicals. This loss may be related to PON1's role in fatty acid oxidation and poses a significant health risk for marine mammals living near agricultural runoff.
A new study analyzing online dating website interactions in four major US cities found that both men and women pursued partners about 25% more desirable than themselves. The authors discovered a consistent hierarchy of desirability based on age, education, gender, and race/ethnicity.
Researchers developed QPOP, a computational platform that identifies effective drug combinations against bortezomib-resistant MM. The platform successfully predicted dosages for combination therapies, leading to reduced tumor size and prolonged survival in mouse models.
A new study reveals that the Terminal Classic Period drought led to significant reductions in rainfall and relative humidity in the Maya Lowlands. The research found annual rainfall decreased by nearly 50% on average, with up to 70% during peak drought conditions.
Nir Grossman's temporal interference (TI) approach stimulates deep brain regions without surgery, offering a new treatment option for brain disorders. TI uses multiple electric fields to target specific brain areas, improving spatial resolution and non-invasiveness.
Researchers discovered a new property in cuprate superconductors where resistivity scales linearly with high magnetic fields. This finding contradicts existing theories and suggests non-quasipartical mechanisms are at play.
The study of Flores pygmy humans shows they have Neanderthal and Denisovan ancestry, but no direct link to Homo floresiensis. The short-statured phenotype is a result of recent polygenic selection on standing genetic variation.
A new study finds that taking responsibility for others is a key trait of leaders, separating them from followers. Most people exhibit 'responsibility aversion', making decisions that impact others' welfare despite personal preferences.
A new study reveals that hospital-associated bacterial species Enterococcus faecium is adapting to alcohols used in handwash disinfectants, increasing treatment resistance. The analysis of 19-year-old bacterial samples from two Australian hospitals suggests several mutations confer increased alcohol resistance.
Researchers argue that CO2's role in radiative forcing can be calculated with less uncertainty than current models suggest. The study suggests that incorporating line-by-line (LBL) calculations into climate models could reduce uncertainty in climate projections.
A single gene, insulin-like peptide 2 (ilp2), regulates eusociality in ants by influencing reproductive cycles and division of labor. High expression of ilp2 in reproductive ants suggests a key role in the development of complex societies.
A new 3D-printed optical deep learning network called Diffractive Deep Neural Network (D2NN) has been developed by Xing Lin and colleagues. This system processes information through layers of optically diffractive surfaces that work together to recognize handwritten digits with high accuracy.
A 20-kilometer-wide lake of liquid water has been detected beneath Mars' southern ice cap using the Mars Advanced Radar for Subsurface and Ionosphere Sounding instrument. The presence of dissolved salts could lower the melting point, allowing the lake to remain liquid
Researchers have demonstrated direct evidence of biodegradation of polymers like PBAT in agricultural soil, tracking carbon into CO2 and microbial biomass. The study suggests polyesters as a practical alternative to alleviate detrimental plastic accumulation.
Researchers have identified a human 'fingerprint' in the troposphere, indicating significant effects of anthropogenic climate change on seasonal temperature cycles. The study used satellite data for nearly 40 years to isolate the signals of human activity from natural variability.
A new report suggests that deep water coral reefs are not refuges for shallow reef organisms and require protection. The study found that mesophotic coral reefs have their own independent communities with little species overlap between depth zones.
Researchers created a model to simulate biodiversity history in South America over thousands of years, closely matching observed patterns. The model's results suggest topography and climate play critical roles in species diversification and extinction.
Researchers in Shanghai discovered new particles formed in polluted air, defying expectations and highlighting the need for emission reductions to mitigate climate change. The study provides new insights into urban particle formation (NPF) and its role in affecting local and global air quality.
Ozone concentrations in US national parks are comparable to those in largest metropolitan areas between 1990 and 2014. Higher ozone levels are linked to decreased park visitation rates during this time period.
Researchers found targeting resident memory T cells restores pigmentation in mouse model of vitiligo, offering potential new treatment. Current treatments can restore color but depigmentation recurs in up to 40% of cases.
A new study identifies the SD1 gene as responsible for the deepwater rice adaptation, which enables plants to rapidly grow taller to keep above floodwaters. This discovery highlights the intrinsic complexity of plant adaptation strategies and could offer solutions for breeding modern rice varieties to cope with climate change.
Researchers discovered a blazar, TXS 0506+056, producing high-energy neutrinos in multiple bursts, confirming the source of previously detected astrophysical neutrinos. The 'flaring state' observations were made when the neutrino signal arrived in September 2017, with bright emission across multiple wavelengths.
Researchers have developed a family of metal-free ferroelectric perovskites offering non-toxic and mechanically flexible properties for future soft robotic and biomedical devices. One organic compound exhibits ferroelectric traits similar to inorganic BTO, enabling environmentally friendly applications.
A new study in mice, rats, and humans reveals that longer waiting periods for rewards strengthen a sunk cost bias, causing individuals to be less willing to give up pursuit of the reward. The researchers discuss three possible explanations for this phenomenon, which may help improve decision-making.
A combination treatment has safely enhanced the ability of the immune system to fight infections in the elderly, reducing their incidence by a year. The treatment, which inhibits TORC1 protein complex, showed improved immune response towards seasonal influenza vaccine, paving the way for therapies targeting infectious diseases.
Researchers have found a new type of projectile point technology in North America, dating back at least 16,000 years. This discovery suggests that humans occupied the Americas prior to the Clovis culture, which is currently considered one of the oldest Paleo-Indian cultures.
New images from the Juno spacecraft reveal that Jupiter's moons Io and Ganymede cast multiple, double-wingshaped auroral footprints on their parent planet. These large lunar bodies decorate the atmosphere with unusual patterns, previously seen as a bright spot footprint of each nearby moon.
A genetic study uncovers that pre-contact American dogs originated from Siberian ancestors, not native wolves, and were introduced to the region through Beringia. Meanwhile, ancient goat domestication in the Near East involved multiple wild sources and selective breeding for traits like color.
A newly discovered neural circuit in mice regulates feeding behavior, with SST neurons playing a central role. The study reveals that activating these neurons increases eating behavior, while inhibiting them reduces it.
Investigative report finds 40 physician advisors took over $10,000 from drug makers after reviewing drugs, while 26 received more than $100,000 in post-hoc earnings. The FDA's honor system for disclosing financial interests may be ineffective in detecting conflicts of interest.
Researchers found that stabilizing dysfunctional endothelial cells with approved drugs reverses cellular dysfunction in a rat model of cerebral small vessel disease. The study suggests a potential new treatment for vascular dementia, which is a major cause of cognitive disability in the elderly.
A nearly complete foot from Dikika, Ethiopia, exhibits ape-like foot characteristics that challenge the long-held assumption of bipedalism in A. afarensis. The discovery provides new insights into the evolution of bipedality and highlights the importance of juvenile specimens in understanding trait development.
A series of experiments by David Levari et al. shows that people perceive threatening stimuli as abundant even when they are decreasing in reality. This perception bias affects important decisions, such as those made by police officers or research ethics board members.
A new study using satellite data found that global rivers and streams cover about 773,000 km2 of the non-glaciated land surface, a 44% increase over previous estimates. The increased coverage suggests large-scale impacts of human modification on river networks in developed regions.
A new study estimates mortality rates for nearly 4,000 Italians over 105 years old, finding a plateau in death rates after age 105. The research suggests that human longevity is increasing over time, with slight declines in mortality rates across groups born within the same year.
A predictive model analysis of Medicare claims reveals that less than 5% of end-of-life healthcare spending goes to those with a mortality risk above 50%, who are more likely to survive. Adjusting for the amount spent on sick individuals, 30-50% of end-of-life spending can be eliminated without affecting survival rates or quality of life
Researchers discovered heroin addicts have more hypocretin-producing neurons than controls, while morphine reversed cataplexy symptoms in narcoleptic mice. Increasing hypocretin levels may serve as a treatment strategy for narcolepsy and potentially combat opiate addiction.
A new study from the American Association for the Advancement of Science found that mandatory labeling of genetically engineered (GE) foods in Vermont led to a 19% reduction in opposition to these products. By providing transparency, labels may alleviate public concerns about GE food safety.
The study analyzed over 900,000 genomes to identify genetic overlap among psychiatric diseases and personality traits. Schizophrenia was found to correlate with most psychiatric disorders, while anorexia nervosa, obsessive-compulsive disorder, and autism spectrum disorder demonstrated significant overlap.
Researchers estimate US methane emissions from oil and gas supply chains are greater than thought, with emissions in 2015 about 60% higher than EPA estimates. The discrepancy is likely due to existing inventory methods not capturing abnormal operating conditions like malfunctions.
A new genus and species of gibbon has been identified in an ancient Chinese noble-woman's tomb, revealing a previously unknown extinct population of apes in eastern Asia. The findings suggest that human activity may have contributed to the gibbon's extinction.
A rapid rebound of Antarctic crust may help stabilize the West Antarctic Ice Sheet against catastrophic collapse. The Amundsen Sea Embayment is experiencing an uplift rate of 41 millimeters annually, which could delay collapse events under strong climate forcing.
A new report analyzes 30 years of economic and migration data, revealing that asylum seekers have a positive impact on host countries' economies. Asylum seekers take longer than migrants to have a positive effect but still contribute significantly to tax revenues and improve public finances.
Researchers discovered that FDA-approved kinase inhibitors can curb lung tumor growth in mouse models, offering new therapeutic avenues for a hard-to-treat form of lung cancer. The findings highlight the potential of targeting ERBB receptor tyrosine kinases and EGFR signaling pathways to develop alternative treatment strategies.
Researchers at Google DeepMind created a machine-learning system called Generative Query Network (GQN) that learns 3-D scene composition from limited 2-D images. The GQN can generate predicted images of unseen scenes from different viewpoints, allowing for autonomous learning without human supervision.
Summer monsoons in South Asia purify the air of certain pollutants by oxidizing them into less volatile products, which then exit the atmosphere through rain. However, these monsoons also disperse other pollutants globally through a massive anticyclone circulating above the region.