5,617 results
5,617 results for: Bacteria
- Anthropology
Infectious Voyagers: DNA suggests Columbus took syphilis to Europe
A genetic analysis of syphilis and related bacterial strains from different parts of the world fits the theory that Christopher Columbus and his crew brought syphilis from the Americas to Renaissance Europe, where it evolved into modern strains of the sexually transmitted disease.
- Health & Medicine
Salmonella seeks sweets
A sugarlike substance in the roots of lettuce may attract food-poisoning bacteria.
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Do-It-Yourself DNA: Scientists assemble first synthetic genome
Assembly of the first human-made microbial genome could pave the way for making microbes with synthetic DNA.
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- Humans
ISEF winners announced
More than 1,500 young scientists flexed their mental muscles this week at the world's largest high-school science competition.
- Life
Choose your own splicer
Zinc-finger proteins can cut, splice or tweak a targeted gene, and a new “open source” method for making customized zinc-finger proteins aimed at specific genes will give scientists easier access to this powerful genetic tool.
- Tech
Biowarfare: Engineered virus can invade bacterial film
A genetically engineered virus not only kills bacteria but makes an enzyme that breaks up the biofilm in which the bacteria live.
- Life
Fountain of Youth, with caveats
A chemical in red wine thought to mimic the life-extending properties of calorie restriction improves health, but doesn’t necessarily lengthen life; it could also harm the brain.
- Health & Medicine
Still Waters: Skin disease microbe tracked to ponds, swamps
Scientists establish pond water as the natural environment of Mycobacterium ulcerans, the cause of the skin disease Buruli ulcer.
- Physics
Rock, paper, toxins
A computer model simulates a kind of rock-paper-scissors competition among three species of virtual bacteria.
- Ecosystems
Eight-legged bags of poison
Birds eating arachnids get high dose of toxic metal as mercury climbs up the food chain.
- Humans
Letters from the March 15, 2008, issue of Science News
Alpha bird(s) There is a detail not explicit in the article “Birds network too” (SN: 2/23/08, p. 125) that fits the computer network analogy. By its flight path, each bird adds its personal input and helps guide the course of the flock. Don BurnapRapid City, S.D. Andrea Cavagna, a physicist at Italy’s National Research Council, […]
