Uncategorized
- 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.
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18917
While applauding the great advance that nerve regeneration would bring to people with spinal cord injuries, I wonder if there is a reason that nature has designed the body so that these nerves do not regenerate. Perhaps an unintended consequence in genetically altering the proteins mentioned in your article could be the onset of some […]
- 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.
- Materials Science
Soybeans could beef up plywood glues
Researchers have replaced animal protein with soybean protein in experimental plywood glue, potentially reducing cost and health worries.
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From the January 10, 1931, issue
ANTHROPOLOGIST IS ELECTED NEW A.A.A.S. PRESIDENT Dr. Franz Boas, noted anthropologist of Columbia University, was elected president of the American Association for the Advancement of Science for 1931, during the Cleveland meeting. Dr. Boas is one of the leading figures in the field of anthropology. He has been engaged in this work throughout a very […]
- Math
Folding Maps
Anyone trying to refold an opened road map is wrestling with the same sort of challenges confronted by origami designers and sheet metal benders. The problem of returning a creased sheet to its neatly folded state gets tougher when you’re not sure if the sheet can be folded into a flat packet and when you’re […]
- Astronomy
Astronomers find two planetary systems
Each of the newly discovered systems features a star roughly similar to the sun and a bizarre entourage of planets and possibly a failed star that may provide fresh insight into planet formation.
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18916
In your article “Do meat and dairy harm aging bones?” (SN: 1/13/01, p. 20), there was no mention of controls for vitamin D absorption. Differential exposure to sunlight or to dietary sources of vitamin D within the study populations could account for some of the differences in rate of bone loss. Brenda Gray County Dublin, […]
- Health & Medicine
Do Meat and Dairy Harm Aging Bones?
Two studies have contradictory findings about the impacts of animal protein on bones in elderly people.
