John Travis
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All Stories by John Travis
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Scrambled Dogma: Stem cells may make new eggs in women
Scientists may have come up with a new explanation for how a woman's biological clock works.
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Sunny Solution: Lotion speeds DNA repair, protects mice from skin cancer
Snippets of DNA that activate a cell's DNA repair process may protect mice from skin cancer caused by ultraviolet radiation.
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Keeping abreast of serotonin’s roles
Serotonin, a chemical typically associated with the brain, also controls milk production in mammary glands.
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Health & Medicine
Tea for Too Much Bilirubin?
A special tea may be an alternative to fluorescent lights for treating newborns who suffer from jaundice.
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Blocked gene gives mice super smell
Deactivating a single gene can produce mice with an abnormally sharp sense of smell.
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Health & Medicine
Pill Puzzle: Do antibiotics increase breast cancer risk?
A new study links antibiotic use to breast cancer, although it's not clear the drugs cause the disease.
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Tailoring Therapies: Cloned human embryo provides stem cells
Scientists have for the first time carried test-tube cloning of a human embryo to the stage at which it can yield stem cells.
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Bacteria do the twist
A newly identified bacterial protein generates the sinuous shapes of some bacteria.
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Gassing Up: Oxygen’s rise may have promoted complex life
The increasing amount of oxygen in Earth's atmosphere may have driven the emergence of complex life.
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Health & Medicine
Aging protein saps muscle strength
Proteins crucial for muscle strength begin to function poorly as rats get older.
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Health & Medicine
HIV outwits immune system, again
The AIDS virus uses immune system proteins to hitch rides on the antibody factories known as B cells, possibly helping it find potential host cells.