A significant increase in oxygen levels in the world's oceans 580 million years ago likely triggered the sudden emergence of large animal fossils, according to Queen's University researchers. This discovery confirms the importance of oxygen as a catalyst for the early evolution of animals.
A Cornell study finds that people, especially those who are overweight, consume up to 50% more calories when eating low-fat versions of snack foods compared to regular versions. Larger serving sizes on low-fat snacks may help reduce overeating.
A new study by Cornell University researchers found that teens ponder risks longer than adults, leading to a higher likelihood of engaging in high-risk behaviors. The findings suggest that interventions should focus on developing 'gist-based' thinking to avoid dangers rather than weighing pros and cons.
The vaquita, the smallest living cetacean, is critically endangered due to accidental mortality in fishing gear. Conservation efforts are underway to reduce bycatch and protect the species, but progress has been slow. The Mexican Government has taken steps to protect the vaquita's habitat and compensate affected fishermen.
A new probability model designed by Stanford University geophysicists weaves together data from Global Positioning System (GPS) and the geological record to estimate fault movement rates. This time-dependent model reconciles the discrepancy between GPS-paleoseismology data, providing a more accurate picture of slip rates.
A new study finds that 93% of gorillas at the Lossi Sanctuary in Congo were killed by Ebola during outbreaks in 2002 and 2003. The research suggests that targeted vaccination strategies could be effective in controlling the spread of the disease, which has devastated ape populations in Africa.
The EMBO Installation Grants scheme aims to strengthen science in selected member states by supporting talented life scientists in setting up their research groups. The grantees will receive 50,000 euro annually for three to five years, with networking opportunities through the EMBO Young Investigator network.
A new study by Ohio State University researchers found that children aged 8-12 can handle and wear contact lenses with ease, similar to teenagers. The study, which involved 169 participants, revealed that younger children were more satisfied with wearing contact lenses than glasses, citing improved vision and participation in activities.
A Cornell-built robot learns its own model of itself and can revise the model to adapt to injury, a process resembling human and animal babies discovering their bodies. The underlying algorithm could be applied to build more complex robots and allow them to adapt to changes in environment and repair themselves.
Scientists have developed a model of the phagosome using systems biology approach, facilitating study of its function and interactions. The model may lead to better understanding of infectious disease processes and development of new strategies to fight pathogens.
Recent studies found that people eat up to 28-45% more calories when consuming low-fat snacks, as they mistakenly perceive them as lower-calorie alternatives. This misperception can lead to overindulgence and a poor diet.
Abstracts on Soliris (eculizumab) will be presented at the ASH Annual Meeting, highlighting its potential to reduce thrombosis in paroxysmal nocturnal hemoglobinuria (PNH) patients. The therapy has shown promise in clinical trials with significant reductions in anemia and intravascular hemolysis.
A new study found that patients who initiate general discussions about antidepressant medication are more likely to be thoroughly evaluated for depression than those with brand-specific requests or no request. This increase in history-taking also leads to better provision of initial care and diagnostic accuracy.
Researchers at MIT have developed a new transistor technology that could lead to faster operation and smaller devices. The transistors, made from indium gallium arsenide, are 60 nanometers long and can switch and process information quickly.
Researchers at NIST have successfully used mechanical motion to induce rotation in rubidium atoms in a gas, generating an oscillating magnetic field. The technique allows for the detection of atomic spins with high precision, opening doors for applications such as high-performance magnetic sensors and quantum computer components.
High-temperature superconductors exhibit a 'pseudogap' when electrons are bound together, but the new study reveals the same cloverleaf-shaped energy gap appears in both non-superconducting and superconducting states. This finding may provide a key to understanding the superconducting phenomenon.
A breakthrough discovery by Vera Krymskaya at the University of Pennsylvania School of Medicine has linked a potential treatment for Lymphangioleimyomatosis (LAM), a rare lung disease targeting only women during childbearing years. The treatment, utilizing a medication to inhibit abnormal growth, is now in clinical trials.
Scientists at UCSC developed a new instrument to measure water droplet sizes in clouds, revealing a combination of entrainment and turbulence in raindrop formation. The findings suggest that stirring up droplets can speed up coalescence, challenging long-standing debates over the mechanisms behind this process.
Scientists at ESRF have made significant progress in understanding zeolite synthesis by monitoring the process in real-time. They found that molecular organization occurs before crystallization, leading to more efficient catalysts.
A NIST-developed image enhancement technique, APEX, successfully sharpened details on distant galaxies in Hubble images. The method overcame limitations of traditional deblurring techniques by leveraging mathematical simplifications.
Current UK agri-environment schemes have worked well for rare and localised species but struggled to reverse declines of more widespread bird species. A new study suggests that tailored habitat management to regional differences could be key to success.
Researchers identified two genes from different fruit fly species that interfere with each other, preventing male offspring production. This finding supports the Dobzhansky-Muller model, which suggests hybrid incompatibilities are caused by diverged genes from a common ancestor.
Researchers found that breast-feeding counters genetic tendencies toward ear infections, which can lead to learning difficulties and language development issues. The study identified specific genes involved in the vulnerability, but found that breast-feeding effectively neutralized their impact.
Studies presented at the 2006 Annual Meeting of the American Society of Hematology demonstrate significant gains in treating multiple myeloma and related blood cancers. New treatment regimens, including THALOMID, VELCADE, and REVLIMID, show promising results in both newly diagnosed and relapsed patients.
Researchers at University of Pennsylvania School of Medicine discovered targeting a single gene can inhibit bone decay while stimulating bone formation. This concept may lead to drug treatments for osteoporosis and other bone diseases.
Two studies on bee evolution support a new hypothesis that bees originated in Africa over 100 million years ago. The discovery of an ancient bee fossil in amber provides strong evidence for this theory.
Researchers develop a new approach to creating stable glassy materials from organic molecules, which could enhance drug delivery and enable targeted therapy. The process uses vapor deposition at low temperatures, resulting in densely packed molecules with exceptional thermodynamic and kinetic stability.
A clinical trial has found that a combination of nifurtimox-eflornithine offers a cure rate over twice that of current treatments for second-stage African trypanosomiasis. This combination also resulted in lower rates of adverse events, suggesting potential as a future therapy.
Researchers at Cornell University discovered a mutant mouse with increased genomic instability, leading to mammary tumors. The study suggests that impaired DNA replication genes may contribute to breast cancer.
Researchers from Johns Hopkins University are developing mathematical models to represent the safest and most effective ways to perform surgery. By analyzing data from robotic medical tools, they aim to evaluate a surgeon's work and help doctors improve their skills. The goal is also to enable robotic surgical tools to perform with gre...