Uncategorized
- Life
Select cells appear to spawn tumors
Separate studies support the theory that stem cells cause cancers to emerge and recur.
- Health & Medicine
Alzheimer’s protein could help in MS
A-beta, the same molecule that has been tied to dementia when it accumulates in the brain, appears to reduce damage when introduced to the bodies of mice with symptoms of multiple sclerosis.
- Humans
DNA hints at African cousin to humans
Complete genetic profiles of people from three hunter-gatherer groups suggest Homo sapiens interbred with a now-extinct species on the continent relatively recently.
- Planetary Science
Curiosity readies for dramatic entrance
NASA’s new Mars rover aims to alight on the Red Planet like a pop star being lowered onto stage.
- Anthropology
Sticks, stones and bones reveal emergence of a hunter-gatherer culture
A cave in southern Africa was occupied by people very much like those living in the region today.
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- Health & Medicine
19th International AIDS Conference
Highlights from the AIDS meeting, July 22-27, Washington, D.C.
- Health & Medicine
19th International AIDS Conference
Highlights from the AIDS meeting, July 22-27, Washington, D.C.
- Humans
Top airports for spreading germs ID’d
Major hubs with far-flung flights are most efficient at launching pandemics.
- Life
Genome of a fruit besieged
The banana genome has been unpeeled. The genetic makeup of Musa acuminata, a fertile banana species that gave rise to the seedless Cavendish and other clonal varieties people eat today, sheds light on the plant’s evolutionary history and ripening process. This information may also help researchers boost the crop’s resistance to fungal and viral pathogens […]
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Comic strip science
“I am so awesome.” [Smug grin.] Rosemary Mosco’s comic strips feature her favorite inspirations from nature and science. Courtesy of R. Mosco A classic method for remembering bird calls using similar-sounding words gets a new twist in Rosemary Mosco’s guide to the songs and calls of eastern North American birds. Courtesy of R. Mosco So […]
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Letters
Galactic collisions explained Perhaps you can explain why Andromeda and the Milky Way are going to collide “Milky Way will be hit head-on,” (SN: 7/14/12, p. 10). Galaxies, as is always written, are rushing away from each other at ever-increasing speeds. How do things collide when there is never anything to collide with? Either galaxies are […]
