Scientists from NASA and other organizations are on a mission to unlock the mysteries of why certain clouds produce copious amounts of rain. In a field mission that is now under way, aircraft are carrying instruments above and into rain clouds. Meanwhile scientists are also getting rainfall measurements on the ground.
This field campaign provides the most comprehensive observations of rainfall in the U.S. through the use of aircraft, spacecraft, remote sensing and ground sensors.
ESA's fleet of space telescopes has captured the nearby Andromeda Galaxy, also known as M31, in different wavelengths. Most of these wavelengths are invisible to the eye and each shows a different aspect of the galaxy's nature.
Visible light, as seen by optical ground-based telescopes and our eyes, reveals the various stars that shine in the Andromeda Galaxy, yet it is just one small part of the full spectrum of electromagnetic radiation. There are many different wavelengths that are invisible to us but which are revealed by ESA's orbiting telescopes.
A low pressure area currently over northern Illinois and southern Wisconsin has created conditions that call for a forecast of severe weather in the eastern third of the U.S. today and one area is even labeled "high risk." The GOES-13 Satellite captured a visible image of the system today as daytime heating was boiling up strong and severe thunderstorms.
Astronomers may now know the cause of an historic supernova explosion that is an important type of object for investigating dark energy in the universe. The discovery, made using NASA's Chandra X-ray Observatory, also provides strong evidence that a star can survive the explosive impact generated when a companion star goes supernova.
Hypertension is very common among older adults. 64 percent of older men and 78 percent of older women have high blood pressure, placing them at heightened risk for heart disease including heart failure, stroke, coronary artery disease and atrial fibrillation, as well as chronic kidney disease and diabetes mellitus. Despite its prevalence, rates of blood pressure control remain substantially lower in the elderly than in younger patients. In fact, over age 80, only one in three men and one in four women have adequate control of their blood pressure.
RICHLAND, Wash. -- Atmospheric scientists trying to pin down how clouds curb the amount of sunlight available to warm the earth have found that it depends on the wavelength of sunlight being measured. This unexpected result will help researchers improve how they portray clouds in climate models.
UCLA researchers have redefined the concept of a microscope by removing the lens to create a system that is small enough to fit in the palm of a hand but powerful enough to create three-dimensional tomographic images of miniscule samples.
The advance, featured this week in the early online edition of the journal Proceedings of the National Academy of Sciences, represents the first demonstration of lens-free optical tomographic imaging on a chip, a technique capable of producing high-resolution 3-D images of large volumes of microscopic objects.
UCLA researchers have redefined the concept of a microscope by removing the lens to create a system that is small enough to fit in the palm of a hand but powerful enough to create three-dimensional tomographic images of miniscule samples.
The advance, featured this week in the early online edition of the journal Proceedings of the National Academy of Sciences, represents the first demonstration of lens-free optical tomographic imaging on a chip, a technique capable of producing high-resolution 3-D images of large volumes of microscopic objects.
Patients on peritoneal dialysis (PD) typically have a higher early survival rate than patients on hemodialysis (HD). New data suggest that this difference may be explained by a higher risk of early deaths among patients undergoing HD with central venous catheters, according to a study appearing in an upcoming issue of the Journal of the American Society of Nephrology (JASN).
April 18, 2011 – Illicit drug overdose deaths declined dramatically after the establishment of North America's first supervised injection facility located in Vancouver, Canada, according to the findings of a groundbreaking new study published in The Lancet.
Berkeley, CA– New research by the U.S. Department of Energy's (DOE) Lawrence Berkeley National Laboratory finds strong evidence that homes with solar photovoltaic (PV) systems sell for a premium over homes without solar systems.
Researchers from North Carolina State University have discovered how fat, oil and grease (FOG) can create hardened deposits in sewer lines: it turns into soap! The hardened deposits, which can look like stalactites, contribute to sewer overflows.
Hurricane season doesn't start in the Northern Atlantic Ocean until June 1, but a low pressure system in doesn't seem to want to follow the calendar. There's a low pressure area with a small chance for development north-northeast of Puerto Rico, and the GOES-13 satellite captured a visible image of the storm.
In the past 12 years, four large-scale efficacy trials of HIV vaccines have been conducted in various populations. Results from the most recent trial—the RV144 trial in Thailand, which found a 31 percent reduction in the rate of HIV acquisition among vaccinated heterosexual men and women—have given scientists reason for cautious optimism. Yet building on these findings could take years, given that traditional HIV vaccine clinical trials are lengthy, and that it is still not known which immune system responses a vaccine needs to trigger to protect an individual from HIV infection.
ANN ARBOR, Mich.---Melting glaciers and ice caps on Canadian Arctic islands play a much greater role in sea level rise than scientists previously thought, according to a new study led by a University of Michigan researcher.