All Stories by John Travis
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Drugs order bacteria to commit suicide
Seeking to explain how antibiotics work, scientists find a protein that commands bacteria to kill themselves.
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Malaria parasite reveals old age
The DNA of a malaria-causing parasite suggests it is at least 100,000 years old.
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Biological clock study challenged
A report disputes the controversial notion that bright light applied to skin can reset a person's biological clock.
- Health & Medicine
Worm genes take on bacterial foes
Creatures as simple as worms have an effective immune defense.
- Health & Medicine
Fullness Factor: Gut hormone tells brain the stomach is well fed
A hormone produced by the intestines could be the primary satiety signal sent to the brain.
- Health & Medicine
Lab tool may spawn new antiviral drugs
Short strands of RNA can be used to stop viruses such as HIV.
- Health & Medicine
Fat Chance: Cancer drugs may also thwart obesity
Drugs now undergoing testing as a cancer therapy because they thwart new blood vessel growth may also be a treatment for obesity.
- Health & Medicine
Viral Survivor
Epstein-Barr virus, the cause of diseases ranging from mononucleosis to several kinds of cancer, has begun to reveal how it enters human cells and protects itself from the immune system.
- Health & Medicine
Disabled Defense: HIV protein counters immune-cell gene
Immune cells contain a protein that can inhibit HIV replication if the AIDS virus lacks a key protein.
- Health & Medicine
Melanoma gene quickly reeled in
Biologists have discovered a gene that may contribute to many cases of deadly skin cancer.
- Health & Medicine
Firm nears completion of human genome
Celera Genomics announced that it has sequenced 90 percent of the human genome and claimed it has found about 97 percent of all human genes.
- Humans
Students shine in Science Talent Search
The Intel Science Talent Search announces its 40 finalists
