Researchers at Sandia National Laboratories have created a quantum mechanical transistor that can process information faster and consume less power than current transistors. The device has the potential to be used in high-speed computing, chemical detection, and other applications.
Researchers have found evidence of molten rock two thousand miles beneath the Earth's surface, challenging scientists' understanding of mantle convection. The discovery was made using seismic waves measured in Norway and detected a slurry of molten rock across a 300-by-600-mile region deep beneath Tonga.
Scientists Harry van Loon and Karin Labitzke found a mirror image of the solar-stratosphere correlation in the Southern Hemisphere, spanning three solar cycles. The analysis suggests that the sun's 11-year solar cycle drives periodic changes in temperatures and pressure heights of the lower stratosphere from pole to pole.
A study of college-age women found a high incidence of HPV infection, with prevalence ranging from 20-46% in different countries. Regular Pap smears are crucial for early detection and prevention of cervical cancer.
A team of scientists at NCAR has developed a new method to accurately quantify the total radiative output of the sun, including ultraviolet, visible light, and infrared wavelengths. This breakthrough will provide better information on the sun's influence on earth's climate and improve our understanding of solar variability.
A new study by Columbia University researchers establishes the first mathematically sound definition of epilepsy, requiring two unprovoked seizures for a diagnosis. The study found that patients who have had two seizures are at high risk of recurrence, with a 73% chance of having a third seizure within five years.
USGS geochemist Keith Kvenvolden's study suggests that most oil residues in Monterey Bay are likely from natural seeps, rather than ruptured tankers. The study found unusually heavy carbon isotopic compositions characteristic of crude oils from the Miocene Monterey Formation of California.
Researchers found that daily smokers have twice the risk for major depression compared to occasional smokers. The study also revealed that depression may lead to increased smoking, particularly among young adults.
A two-month course of therapy is an effective alternative to the year-long regimen for preventing active tuberculosis in HIV-infected individuals. The study found that fewer deaths occurred among patients in the two-drug arm, with improved treatment compliance compared to the one-drug arm.