A study of Native American artifacts found high levels of mercury, naphthalene, and DDT, posing a risk to human health. Museums are advised to handle these objects with proper precautions until further research is conducted.
Scientists identified 10 genes that function similarly to the Oct4 gene, essential for embryonic development. Inefficiently expressed genes in somatic cell-derived clones may contribute to their failure to survive. The study aims to improve cloning efficiency and yield vital information about disease and cell development.
A new study reveals that iron deficiency leads to significant economic losses, particularly in developing countries. The research estimates that iron deficiencies result in a 0.6% loss of GDP due to physical productivity losses from adults lacking iron, rising to 4% with added learning and motor impairments.
Women in professional occupations reported feeling a sense of loss upon retirement, while those in nonprofessional jobs felt relieved. They also differed in their decision-making processes, with professionals focusing on pension eligibility and health concerns, while nonprofessionals based it on family issues.
Employers and insurers are exploring new hospital-tier insurance plans to increase enrollees' sensitivity to price variations between hospitals. This trend aims to moderate hospital prices by providing incentives for cost-conscious consumers to choose lower-cost facilities.
The study found that complex interactions between common gene variants contribute to Parkinson's disease risk in women. Environmental exposures are thought to play a greater role in men, with estrogen reducing the risk of developing the disease in women.
Trachoma is a substantial global burden, with millions blinded worldwide and estimated annual costs of $2.9 billion. Future research should consider the broader impact of trachoma on disability beyond visual loss, according to the study's authors.
Researchers at the University of Toronto have discovered a new physics phenomenon that uses metamaterials to create a focused beam of light. By amplifying evanescent waves and correcting their phase, these lenses could revolutionize the engineering of electronic devices at the nanometre scale.
Researchers found that lightning creates significant amounts of nitrogen oxides and ozone in the free troposphere. The study showed that lightning is a major contributor to regional air chemistry, generating more oxidants that help clean up the atmosphere while also producing pollutants like ozone.
Scientists have discovered two signaling molecules, Wnt and noggin, that influence immature stem cells to form hair follicles. These findings may lead to new ways to promote or inhibit hair growth, as well as insights into the development of other tissues like teeth and lungs.
Researchers have identified two natural proteins, Wnt and noggin, that promote the development of hair follicles in stem cells. These proteins work together to change the stem cell's shape and separate from adjoining cells, a crucial step for hair growth.
Bierman and Landry will conduct research to improve Army land managers' understanding of landscape change and detect mustard gas using porous materials. The projects aim to expand research opportunities in states with limited federal funding for university research.
HIV-1 uses a unique 'glycan shield' mechanism to evade antibody attack, continuously changing large sugar molecules on its surface. This allows the virus to outsmart the immune system and escape elimination.
A study found that venom immunotherapy significantly reduced the risk of severe systemic reactions to jack jumper ant stings in healthy adults. The treatment was effective in preventing life-threatening reactions, even in those who had previously experienced severe symptoms.
Sarah Billington and Alexandria Boehm, two Stanford professors, are pioneering research in earthquake-resistant construction and coastal water quality. Their work aims to improve infrastructure sustainability and environmental protection.
Researchers developed an underwater sensor system that uses hierarchical, acoustic method to transfer information from sensors in water to the air for monitoring of rivers, lakes, and ponds. The system enables continuous, in-place monitoring, which is easier, more timely, and less expensive than traditional methods.
A continental SuperGrid could meet the US energy demands in the 21st century by delivering both electrical power and hydrogen fuel. The concept links urban centers to remote power sources, reducing transmission bottlenecks and improving system reliability.
A Salk Institute research team has discovered a receptor-protein interaction that guides nerve cells along specific pathways. The binding of protein Wnt5 to receptor Derailed prevents nerve cells from entering the wrong pathway, ensuring accurate connections.
Airway epithelial cells use a repair mechanism that is triggered when the cell barrier is breached, allowing messenger molecules to communicate with receptors and initiate rapid repair. This study suggests that certain diseases, such as asthma and cystic fibrosis, may impair this mechanism, leading to abnormal cellular changes.
A scholar suggests that an economic system may be a contributing factor to dissatisfaction in the West. Her book, Radical Gratitude, proposes that people can be happier by being more grateful for what they possess and have accomplished.