All Stories by John Travis
- Health & Medicine
Abortion-cancer link is rejected
A workshop report concludes that abortions do not increase a woman's chance of developing breast cancer.
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Blood Work
Knowing the identity of every protein in the liquid portion of blood could offer new ways to detect—or even treat and prevent—many diseases.
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Feline Finding: Mutations produce black house cats, jaguars
Mutations in two different genes, which lead to black fur in house cats, jaguars, and jaguarundis, may have protected the black felines from an epidemic long ago.
- Health & Medicine
Portrait of a cancer drug at work
Newly revealed protein structures show how a breast cancer drug functions.
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Stem Cell Surprise: Blood cells form liver, nerve cells
Human blood contains stem cells that can be transformed outside the body into a variety of cell types, suggesting that a person's blood could someday provide replacement cells for that individual's damaged brain or kidney.
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Dolly, first cloned mammal, is dead
Dolly, the first clone of an adult mammal, has been euthanized after acquiring a severe lung infection.
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Mining the Mouse
Recent analyses of the mouse genome illuminate human health and evolution.
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Gene found key to brain chemical
The mammalian brain makes the neurotransmitter serotonin in an unexpected way.
- Health & Medicine
Worms offer the skinny on fat genes
The identification of worm genes that regulate fat storage may provide insight into human obesity.
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Catch of the day for cancer researchers
Scientists are using glowing tumor cells inside zebrafish to study how cancer spreads.
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Genghis Khan’s Legacy?
Genghis Kahn's military success 800 years ago may have spread a particular form of the Y chromosome, one he may have himself carried.
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Heat-Seeking Missiles: Sperm may follow rising temperature to egg
In a process called thermotaxis, sperm cells may use a temperature gradient in the fallopian tubes to find their way to an unfertilized egg.
