5,519 results
- Life
Genetic sameness could be factor in Tasmanian tiger extinction
The first complete mitochondrial genome of the Tasmanian tiger is revealed. Analysis shows little genetic diversity.
- Humans
Letters from the March 22, 2008, issue of Science News
The price of water In reference to the article “Going Down: Climate change, water use threaten Lake Mead” (SN: 2/23/08, p. 115), scarcity requires society to allocate. Usually markets do a better job than law at allocating efficiently and fairly. Lake Mead could remain full to the brim regardless of pending climate change. The quoted […]
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This article offers a mechanism to explain the hygiene hypothesis featured prominently in past issues of Science News. If exposure to microbes has a beneficial effect on the immune response of mice, it may also help humans as well. The relatively antiseptic environments that many Western children experience today as compared to the past may […]
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Mary, Mary, Quite Contrary . . .
How does her garden grow? From fertile dirt with rusty nails, beer, and bacteria. At least according to the Exploratorium in San Francisco. Now that spring has arrived, green thumbs are itching to get out and get planting, and this hands-on science museum in California has put together a Web site for experienced and budding […]
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The Biofuel Future
Scientists seek ways to make green energy pay off.
- Health & Medicine
Nutrition: Science news of the year, 2008
Science News writers and editors looked back at the past year's stories and selected a handful as the year's most interesting and important in Nutrition. Follow hotlinks to the full, original stories.
- Health & Medicine
Benign—Not: Unexpected deaths in probiotics study
Acute pancreatitis patients provided nutrition laced with supposedly beneficial gut microbes died at far higher rates than did patients who received just the nutrients.
- Health & Medicine
Vitamin D deficiency
Parkinson’s disease patients are more commonly lacking in vitamin D than Alzheimer’s patients or healthy people.
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Barely Alive: Ancient bacteria survive in the slow lane
Microbes locked in 500,000-year-old permafrost appear to breathe and show other signs of very slow life.
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Share Alike: Genes from bacteria found in animals
Bacteria swap genes all the time, but it now appears that they can give their DNA to some animals as well.
- Tech
Tractor beam
Magnetic nanoparticles selectively bind to specific bacteria and can drag them out of a liquid.
- Earth
Corals, turfgrass and sediments offer stories of climate past and future
Science News reports from San Francisco at the fall meeting of the American Geophysical Union
