Uncategorized
- Health & Medicine
Cocaine link to heart attack bolstered
Regular cocaine use may account for one-fourth of nonfatal heart attacks in people under age 45.
- Health & Medicine
Gene mutation can spur autoimmunity
A mutation of a gene on the X chromosome can lead to a dangerous autoimmune disorder and type I diabetes.
- Astronomy
A Jovian moon lost and found
After 25 years, astronomers have relocated a tiny satellite of Jupiter.
- Astronomy
A trio of new planets
With the discovery of three additional planets that lie outside the solar system, astronomers have now found evidence of more than 50 extrasolar planets.
- Health & Medicine
Mending a Broken Heart
Transplants of skeletal-muscle cells may help heal hearts damaged by illness or previous heart attacks.
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The story “Stormy weather” carries some statements that I think need clarification: “If high-energy protons happen to strike astronauts outside the shelter of their spacecraft, they could be severely injured” or even killed. “Because the ionosphere absorbs much of the protons’ energy, they don’t pose a threat to people or electrical systems on Earth.” However, […]
- Planetary Science
Stormy Weather
The 11-year cycle of solar storms has begun to peak, already affecting several Earth satellites and disturbing electric power systems on the ground, and scientists expect 2 more years of this solar maximum turmoil.
- Chemistry
Cut-ups create soft spots for chemistry
Networks of fabricated, squishy vesicles as tiny as red blood cells and connected by thin tubules may one day serve as microscopic chemical laboratories, sensors, and even chemical computers.
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Film solves mystery of sleepwalking coral
For the first time, bewildered researchers realized that a bootlace-size eunicid worm can move chunks of coral around, perhaps explaining how some coral reefs get started.
- Earth
Scientists analyze volcanoes’ killing ways
Death patterns from more than 400 volcanic eruptions through history may reveal ways to reduce the number of fatalities from similar causes in the future.
- Anthropology
Gene, fossil data back diverse human roots
Ancient mitochondrial DNA extracted from Homo sapiens fossils and anatomical links among H. sapiens crania from different regions both support a theory of geographically diverse human origins.
- Health & Medicine
Protein pair induces nerve repair in mice
Mice genetically engineered to make two proteins normally active in early nerve development are able to regrow damaged nerve fibers somewhat in their central nervous systems.
