GREENBELT, Md. - Observations from NASA's Rossi X-ray Timing Explorer
(RXTE) have revealed that the youngest known pulsing neutron star has
thrown a temper tantrum. The collapsed star occasionally unleashes
powerful bursts of X-rays, which are forcing astronomers to rethink
the life cycle of neutron stars.
A better understanding of how memory works is emerging from a newfound ability to link a learning experience in a mouse to consequent changes in the inner workings of its neurons. Researchers, supported in part by the National Institutes of Health's National Institute of Mental Health (NIMH), have developed a way to pinpoint the specific cellular components that sustain a specific memory in genetically-engineered mice.
A better understanding of how memory works is emerging from a newfound ability to link a learning experience in a mouse to consequent changes in the inner workings of its neurons. Researchers, supported in part by the National Institutes of Health's National Institute of Mental Health (NIMH), have developed a way to pinpoint the specific cellular components that sustain a specific memory in genetically-engineered mice.
Like something out of a Robert Louis Stevenson novel, researchers at NASA and McGill University discovered an otherwise normal pulsar which violently transformed itself temporarily into a magnetar, a stellar metamorphosis never observed before.
The focus of two recent Nobel prizes, a species of roundworm has made possible another advance in the understanding of how cells talk to one another, according to a study published online Feb. 21 in the journal Current Biology.
DURHAM, N.H. Kevin Gardner sees green roads right around the corner.
A lot of the infrastructure in this country needs to be re-built, says Gardner, University of New Hampshire associate professor of civil engineering and director of the Environmental Research Group. We have a real opportunity to re-build the infrastructure the right way with sustainable materials and socially sensitive designs that protect air, water, land, and human resources.
A University of British Columbia astronomer with an international team has discovered the largest structures of dark matter ever seen. Measuring 270 million light-years across, these dark matter structures criss-cross the night sky, each spanning an area that is eight times larger than the full moon.
The results are a major leap forward since the presence of a cosmic dark matter web that extends over such large distances has never been observed before, says Ludovic Van Waerbeke, an assistant professor in the Dept. of Physics and Astronomy.
LEXINGTON, Ky. (Feb. 21, 2008) − It's the leading cause of heart disease and stroke: atherosclerosis--a disease characterized by the thickening of arterial walls, restricting blood flow like a narrow pipe. Preventing and reversing this disease is still largely a puzzle to scientists working to put all the right pieces into place and form a complete picture of health for millions of patients who suffer its devastating effects worldwide.
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