Showing results by author "Tina Hesman Saey"

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    • Toxicologists Look to Epigenetics

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 8 mins
    • Unabridged
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    Chemical tags on DNA could one day help assess exposure risks.

    Regular price: $1.95

    • Big Data, Big Challenges

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 20 mins
    • Unabridged
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    In my quest to explore the unknown frontier inside my own body, I stumbled upon one of the most intractable problems facing science.

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    • A Sugar Can Melt Away Cholesterol

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 4 mins
    • Unabridged
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    A sugar that freshens air in rooms may also clean cholesterol out of hardened arteries. The sugar 2-hydroxypropyl-beta-cyclodextrin, or cyclodextrin, removed cholesterol that had built up in the arteries of mice fed a high-fat diet, researchers report. The sugar enhances a natural cholesterol-removal process and persuades immune cells to soothe inflammation instead of provoking it, say immunologist Eicke Latz and colleagues.

    Regular price: $1.95

    • CRISPR Gets a Makeover

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 20 mins
    • Unabridged
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    Scientists usually shy away from using the word miracle - unless they’re talking about the gene-editing tool called CRISPR/Cas9. “You can do anything with CRISPR,” some say. Others just call it amazing.

    Regular price: $1.95

    • Mineralogy's Link to Ecology Makes an Earth Twin Unlikely

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 2 mins
    • Unabridged
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    The odds of finding another planet with Earth’s exact mineral composition are astronomically long, a mineralogist using tools borrowed from ecology calculates. Reproducing Earth’s mineral makeup elsewhere has a 1 in 10200 chance of success, Robert Hazen of the Carnegie Institution for Science in Washington, D.C., said December 6.

    Regular price: $1.95

    • Babies Low on Key Gut Bacteria at Higher Risk of Asthma

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 1 min
    • Unabridged
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    First 100 days are critical period for microbe exposure.

    Regular price: $1.95

    • Antiaging Treatment Shows Promise

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 4 mins
    • Unabridged
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    Killing worn-out cells helps middle-aged mice live longer, healthier lives, a new study suggests. Removing those worn-out, or “senescent,” cells increased the median life span of mice 24 to 27 percent over that of mice in which senescent cells built up normally with age, Mayo Clinic researchers report. Clearing senescent cells also improved heart and kidney function.

    Regular price: $1.95

    • Genetic Tweaks Built Humans’ Bigger Brains

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 4 mins
    • Unabridged
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    Experiments in mice show how to grow a wrinkled cortex.

    Regular price: $1.95

    • More Oxygen May Lead to More Tumors

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 5 mins
    • Unabridged
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    Breathing at sea level may be hazardous to your health, a new study hints. The research compared cancer rates for people at living at various elevations and found that lung cancer rates are lower at high elevations where the air is thinner.

    Regular price: $1.95

    • Signs of Food Allergies Seen at Birth

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 3 mins
    • Unabridged
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    Some babies are born with immune cells primed to cause food allergies, a new study suggests.

    • 4 out of 5 stars
    • The research is inconclusive but . . .

    • By Apallo on 05-27-18

    Regular price: $1.95

    • Potential Ingredient for Alien Life Found on Titan

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 3 mins
    • Unabridged
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    Vinyl cyanide on the Saturnian moon could form millions of cell-like balls in methane oceans.

    Regular price: $1.95

    • Mitochondrial Therapy Has Risk

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 4 mins
    • Unabridged
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    A new study sounds a cautionary note for a controversial procedure for creating “three-parent babies.” That procedure replaces defective mitochondria, the energy-generating organelles in cells, with healthy ones. But even a tiny amount of defective mitochondria carried over in a transfer may replicate and take over the cell, researchers report.

    Regular price: $1.95

    • 'Selfish' DNA Flouts Rules of Inheritance

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 5 mins
    • Unabridged
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    Although harmful, R2d2 can sweep through mouse populations. "'Selfish' DNA Flouts Rules of Inheritance" is from the March 19, 2016 issue of Science News.

    Regular price: $1.95

    • New Catalog of Human Genetic Variation Could Improve Diagnosis

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 6 mins
    • Unabridged
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    Analysis of protein-coding DNA may help narrow which mutations really cause genetic diseases.

    Regular price: $1.95

    • A Brain at Rest Offers Clues to Parkinson’s, Alzheimer’s

    • By: Tina Hesman Saey
    • Narrated by: Mark Moran
    • Length: 4 mins
    • Unabridged
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    Networks of brain regions that are active when the brain is at rest - not thinking about anything in particular - differ between healthy people and those with Parkinson’s or Alzheimer’s diseases, a new study finds.

    Regular price: $1.95

    • How a Galápagos Bird Got Tiny Wings

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 4 mins
    • Unabridged
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    Cormorant's flightlessness tied to several genetic changes.

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    • Neandertal DNA Poses Health Risks

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 10 mins
    • Unabridged
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    Finding Neandertal ancestors in the human family tree was shocking enough when researchers announced it in 2010. Now, the implications for modern-day people carrying surviving Neandertal DNA may prove just as stunning.

    Regular price: $1.95

    • DNA Data Point to Unknown Hominid

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 4 mins
    • Unabridged
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    Traces of long-lost human cousins may be hiding in modern people’s DNA, a new computer analysis suggests.

    Regular price: $1.95

    • Rats Offer DNA Clues to Alcoholism

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 3 mins
    • Unabridged
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    Alcoholism may stem from genes being turned on and off incorrectly, a study of hard-drinking rats suggests. Rats bred either to drink heavily or to shun alcohol have revealed 930 genes linked to a preference for alcohol.

    Regular price: $1.95

    • DNA Evidence Is Rewriting Domestication Origin Stories

    • By: Tina Hesman Saey
    • Narrated by: Jamie Renell
    • Length: 31 mins
    • Unabridged
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    Fresh ideas emerge about the origins of humans’ relationships with their favorite species.

    Regular price: $1.95

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