Uncategorized
- Humans
Letters from the March 5, 2005, issue of Science News
Way-up wander? It seems interesting that undersea flows have at least one characteristic different from rivers: “While river floods on land can create natural levees a few meters tall, the levees formed by [undersea] turbidity currents can grow up to 100 m[eters] high” (“Hidden Canyons,” SN: 1/1/05, p. 9). There are several sites on Mars […]
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19522
I’m sure you published this article in good faith, but I believe that claims for shark cartilage are not made seriously by anyone who studies the role of natural substances in cancer prevention. It was proved ineffective long ago. I think your article does a disservice to honest people who are trying to fight the […]
- Health & Medicine
A Fishy Therapy
Shark cartilage continues to be sold to fight cancer, even though its efficacy has not been confirmed by any major U.S. trials.
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Cytoplasm affects embryonic development
The DNA in a fertilized egg's mitochondria may play a pivotal role in the organism's growth.
- Health & Medicine
Protein may aid stroke recovery
Tests in mice have shown that erythropoietin, a red blood cell growth factor, can reverse brain damage caused by strokes.
- Astronomy
Hole power
New computer simulations and observations are adding to the evidence that supermassive black holes control the growth of the galaxies they inhabit, wielding an influence far beyond their gravitational grasp.
- Archaeology
Pottery points to ‘mother culture’
The Olmec, a society that more than 3,000 years ago inhabited what is now Mexico's Gulf Coast, acted as a mother culture for communities located hundreds of miles away, according to a chemical analysis of pottery remains and local clays from ancient population sites in the area.
- Earth
Baking dirt to predict erosion after a fire
Lab tests suggest that a wide variety of soils exposed to the heat of intense wildfires end up with a similar resistance to erosion, a finding that may help scientists model that process more accurately.
- Health & Medicine
Cell transplants make gains versus diabetes
Transplanting insulin-making cells from a single cadaver into people with type 1 diabetes can reverse the disease in some people.
- Earth
Winged solution to biopollution?
Government officials have released alien moths in hopes that they will rein in the spread of an aggressive climbing fern now invading some 100,000 acres in south Florida.
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Healing secret lies in blood
An unknown factor in blood may be the key to why young people and animals heal much faster than old ones do.
