5,519 results
- Health & Medicine
Sick and down
To fight off an infection or illness, the body shifts into a slow-down mode that mirrors some symptoms of depression. In fact, scientists now think the immune response itself may even cause the mood disorder.
- Health & Medicine
Insightful Light
Raman spectroscopy may offer doctors, dentists and forensic scientists a better tool for molecular detection.
- Plants
Forest invades tundra
The Arctic tundra is under assault from trees, with serious implications for global climate change.
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Insecticide gets help from gut bacteria
The world's most widely used organic insecticide appears to rely on an insect's normal gut flora to do its dirty work.
- Health & Medicine
Guilt by Association: Whole-genome scans yield disease clues
In a sweeping demonstration of the power of the new biology, researchers have linked two dozen genetic variations to six major diseases.
- Earth
Oxygen Rocks: Volcanoes spurred early atmospheric change
Earth owes its oxygen-rich atmosphere to a change in volcanic activity about 2.5 billion years ago.
- Earth
Dead Serious
Little progress has been made this decade in reducing the size of the Gulf of Mexico's dead zone, a massive area of oxygen-depleted water caused by agricultural and urban runoff.
- Health & Medicine
Chocolate Constituent Bests Fluoride
The beans used to make chocolate can also render a tooth-decay-fighting extract; unfortunately, it's bitter, not chocolaty.
- Health & Medicine
Dangerous History
The genome of the TB bacterium has small but significant pockets of diversity, giving scientists new targets for preventing and treating the disease.
- Science & Society
From the March 20, 1937, issue
The real Groundhog Day, microfilm book storage, and turning farm waste into chemical products.
- Chemistry
Switch Hitters: Antibacterial compounds target new mechanism to kill microbes
Recently discovered ribonucleic acid segments, called riboswitches, may become prime targets for new antibacterial drugs.
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All in the Family
Contrary to popular belief, species of salamanders, birds, beetles and fish prefer to mate with close kin.
