Researchers suggest comets consist of same material that formed stars, potentially delivering organic matter to Earth. The detection of hydrogen isocyanide in Comet Hyakutake supports the idea that interstellar gases were incorporated into comet nuclei.
A Johns Hopkins study found that high-risk gastrointestinal surgery patients are less likely to die if treated at hospitals performing more complex procedures, without increased costs. The study's lead author notes that Maryland's unique data collection system contributed to the findings.
According to new population forecasts, there is a 66% chance the world's population will not reach 11.5 billion by 2100, with four regions expected to experience declines before 2050. The global population is projected to increase from 5.8 billion in 2020 to 10.4 billion by 2100, but at a slower rate.
The new report provides revised tables with height percentiles, helping physicians diagnose high blood pressure in children accurately. Accurate assessment is crucial as hypertension can be a symptom of underlying disease or correlate with early adulthood hypertension, allowing for prevention.
Researchers found that a drug called MK-801 can reduce brain cell death during cardiac surgery by blocking glutamate receptors. The study used dogs and showed promising results, suggesting a potential new approach to preventing brain damage during heart surgery.
Scientists from Brookhaven National Laboratory find that iron supplements can boost phytoplankton productivity, which absorbs 40% of the world's carbon annually. However, adding iron may not have a significant impact on global climate change due to other limiting factors.