The HERS study found that hormone replacement therapy did not prevent further heart attacks or death from coronary heart disease (CHD) in postmenopausal women with CHD, despite positive effects on lipoproteins. However, the treatment increased the risk of clots and lung embolism.
Studies in monkeys reveal a neural mechanism for recognizing and sharing meaning through actions, supporting the idea that human speech evolved from ancient gestural communication. Researchers also found similar brain circuits in humans, linking hand movements to Broca's area.
A new poll by UNC-CH found that Southerners are dissatisfied with the amount of work required in schools and believe students need more discipline. The survey also showed a decline in adults' confidence that children today are being educated better than their peers.
The editorial emphasizes the need for improved scientific literacy, citing a 'dangerous ambiguity' in definitions of the issue. The authors argue that promoting scientific literacy requires a new way of teaching, stressing long-term process over short-term results.
A major study of 45,000 Medicare beneficiaries 65 years old or older found that only half received beta-blockers after heart attacks, despite the medication's proven benefit in reducing mortality. This underprescription highlights an opportunity for improvement in caring for elderly patients who are at high risk of another heart attack.
Scientists have developed SAMMS, a self-assembled monolayer on mesoporous support that selectively binds toxic or precious metals like mercury and lead. The technology has shown promise in cleaning up contaminated waterways and recovering valuable metals.
Researchers have identified an unusual molecular mechanism that amplifies the disease-causing power of influenza A virus, potentially explaining its lethality in past pandemics. The discovery may lead to better understanding of pathogenesis and identification of new markers for predicting pandemic potential.
Researchers have determined the complete crystal structure of cytochrome bc1, a crucial protein complex in the mitochondrial respiratory chain. This breakthrough has provided detailed images of the complex at an unprecedented resolution of 3 angstroms, shedding light on its role in energy production for living cells.
Researchers from Lawrence Berkeley National Laboratory tested various sealing materials, including clear plastic tape, foil-backed tape, mastic, and injected aerosol sealant. Only duct tape failed the tests, while others formed good seals for extended periods.
New Swedish research reveals that even small doses of environmental pollutants can cause lifelong neurological disturbances in laboratory animals. The study also raises concerns about the impact on human babies, highlighting the need for continued vigilance in monitoring these toxic substances.
The HERS study found that hormone replacement therapy (HRT) increased risk of non-fatal heart attacks and death in postmenopausal women with established heart disease. In the three-year follow-up, more deaths from heart disease occurred in the HRT group than in the untreated group.
A partnership between Colorado State University and Michigan has made canola-based motor oil available to consumers, offering a cleaner alternative to petroleum-based oils. The oil reduces vehicle emissions by 30 percent and produces no hazardous waste.