John Travis

All Stories by John Travis

  1. Health & Medicine

    Gene helps alcohol help the heart

    A genetic study indicates that moderate consumption of alcohol helps keep the heart healthy.

  2. Nicotine metabolism may spawn carcinogen

    The body may metabolize nicotine into products that the lungs subsequently may convert into a potent compound that causes lung cancer.

  3. Fat Chance: Hormone boosts metabolic rate, induces weight loss in mice

    Fat cells secrete a hormone that tells the brain to boost the body's metabolic rate.

  4. Health & Medicine

    Save the Brain: Study suggests new way to treat head trauma

    A compound that stimulates nerve-cell activity may help the brain recover from serious head injuries.

  5. Quite a Switch

    Cells use ribonucleic acids that bind to small molecules such as vitamins to control gene activity.

  6. Devil’s Lapdog Gets Its Due: The lab rat bares its DNA to biologists

    Scientists announced that they have deciphered the full DNA sequence of the standard lab rat, setting the stage for a new flurry of biomedical research on this rodent and providing insight into mammalian evolution.

  7. It’s Time! Fetal lungs tell mom when to deliver baby

    The maturing lungs of a fetus may signal the mother when it's time for labor.

  8. Health & Medicine

    Bug bites suggest new stroke drug

    Changing a human enzyme so that it resembles one from blood-sucking insects may lead to a new treatment for strokes.

  9. Fish guts reveal microbial alliance

    Scientists are studying germfree zebra fish to better understand how microbes influence gut development.

  10. Brain Gain: Odd RNA converts stem cells into neurons

    An unusual strand of RNA guides stem cells to transform into neurons.

  11. The Bad Seed

    Researchers are racing to identify tumor-forming stem cells in skin, lung, pancreatic, and many other cancers.

  12. Model explains bubonic plague’s persistence

    A computer model of bubonic plague suggests rats can harbor the disease for years before a human epidemic breaks out.