Dust samples collected from the stratosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, scientists report. The dust includes presolar grains and material from interstellar molecular clouds. This “ultra-primitive” material likely wafted into the atmosphere after the Earth passed through the trail of an Earth-crossing comet in 2003, giving scientists a [...]
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Proton beam therapy can be safely delivered to men with prostate cancer and has minimal urinary and rectal side effects, according to a new study.
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A rocket carrying the European Space Agency’s Soil Moisture and Ocean Salinity satellite blasted off successfully today. SMOS is the first-ever satellite to attempt to measure ocean salinity from space. It will provide global maps of soil moisture over land and surface salinity over the ocean.
A new study shows an increase in meniscal tears in children, especially those that play sports.
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A recent assessment finds some positive trends among indicators of biodiversity loss in China — notably, growth in forest coverage and improvements in marine ecosystems. However, other indicators, such as the rate of discovery of invasive species, are worsening. Many animals are under growing threat.
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More than 25 years after myths about gifted education were first explored, they are all still with us and new ones have been added, according to new research.
Nearby galaxies undergoing a furious pace of star formation also emit lots of gamma rays, say astronomers using NASA’s Fermi Gamma-ray Space Telescope. Two so-called “starburst” galaxies, plus a satellite of our own Milky Way galaxy, represent a new category of gamma-ray-emitting objects detected both by Fermi and ground-based observatories.
Infants born to women who received influenza vaccine during pregnancy were hospitalized at a lower rate than infants born to unvaccinated mothers, according to preliminary results of an ongoing study.
A new study compares neighborhoods’ walkability (degree of ease for walking) with local levels of air pollution and finds that some neighborhoods might be good for walking, but have poor air quality.
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Offspring whose mothers had been supplemented with iron-folic acid during pregnancy had dramatically reduced mortality through age 7.